beam

B0132800 (bēm)n.1. A squared-off log or a large, oblong piece of timber, metal, or stone used especially as a horizontal support in construction.2. Nautical a. A transverse structural member of a ship's frame, used to support a deck and to brace the sides against stress.b. The breadth of a ship at the widest point.c. The side of a ship: sighted land off the starboard beam.3. Informal The widest part of a person's hips: broad in the beam.4. A steel tube or wooden roller on which the warp is wound in a loom.5. An oscillating lever connected to an engine piston rod and used to transmit power to the crankshaft.6. a. The bar of a balance from which weighing pans are suspended.b. Sports A balance beam.7. The main horizontal bar on a plow to which the share, coulter, and handles are attached.8. One of the main stems of a deer's antlers.9. a. A ray or shaft of light.b. A concentrated stream of particles or a similar propagation of waves: a beam of protons; a beam of light.10. A radio beam.v. beamed, beam·ing, beams v.intr.1. To radiate light; shine.2. To smile expansively.v.tr.1. To emit or transmit: beam a message via satellite.2. To express by means of a radiant smile: He beamed his approval of the new idea.Idiom: on the beam1. Following a radio beam. Used of aircraft.2. On the right track; operating correctly.

[Middle English bem, from Old English bēam; see bheuə- in Indo-European roots.]

beam

(biːm) n1. (Building) a long thick straight-sided piece of wood, metal, concrete, etc, esp one used as a horizontal structural member2. (General Engineering) any rigid member or structure that is loaded transversely3. (Nautical Terms) the breadth of a ship or boat taken at its widest part, usually amidships4. a ray or column of light, as from a beacon5. a broad smile6. (Crafts) one of the two cylindrical rollers on a loom, one of which holds the warp threads before weaving, the other the finished work7. (Zoology) the main stem of a deer's antler from which the smaller branches grow8. (Agriculture) the central shaft of a plough to which all the main parts are attached9. (General Physics) a narrow unidirectional flow of electromagnetic radiation or particles: a beam of light; an electron beam. 10. (General Physics) the horizontal centrally pivoted bar in a balance11. (Anatomy) informal the width of the hips (esp in the phrase broad in the beam)12. a beam in one's eye a fault or grave error greater in oneself than in another person13. (Navigation) not following a radio beam to maintain a course14. informal wrong, mistaken, or irrelevant15. (Navigation) following a radio beam to maintain a course16. (Nautical Terms) nautical opposite the beam of a vessel; abeam17. informal correct, relevant, or appropriatevb18. to send out or radiate (rays of light)19. (Broadcasting) (tr) to divert or aim (a radio signal or broadcast, light, etc) in a certain direction: to beam a programme to Tokyo. 20. (Computer Science) to pass (data, esp business card details, etc) from one hand-held computer to another by means of infrared beams21. (intr) to smile broadly with pleasure or satisfaction[Old English beam; related to Gothic bagms tree, Old High German boum tree] beamed adj ˈbeaming adj, n ˈbeamless adj ˈbeamˌlike adj ˈbeamy adj

beam

(bim)
n. 1. any of various relatively long pieces of metal, wood, etc., used esp. as rigid members or parts of structures or machines. 2. a horizontal bearing member, as a joist or lintel, or a transverse supporting structural member on a ship. 3. the extreme width of a ship. 4. Slang. the measure across both hips or buttocks. 5. a. (in a loom) a roller or cylinder on which the warp is wound before weaving. b. a similar cylinder on which cloth is wound as it is woven. 6. the crossbar of a balance from which the scales or pans are suspended. 7. a ray or stream of light or other radiation, as gamma rays, electrons, or subatomic particles. 8. a group of nearly parallel rays. 9. a radio signal transmitted along a narrow course, used to guide pilots. 10. a radiant smile. 11. the principal stem of the antler of a deer. v.t. 12. to emit in or as if in beams or rays. 13. to transmit (a radio or television signal) in a particular direction. 14. to direct (a radio or television program, commercial message, etc.) to a predetermined audience. v.i. 15. to emit beams, as of light. 16. to smile radiantly or happily. Idioms: on the beam, a. on the course indicated by a radio beam. b. Informal. correct; exact. [before 900; Middle English beem, Old English bēam tree, post, ray of light, c. Old Frisian bām, Old High German boum, Old Norse bathmr]

Beam

a ray or collection of parallel rays.Examples: beam of comfort, 1742; of glory; of heat, 1860; of light rays; of sunlight; of truth, 1674.

beam

Past participle: beamed
Gerund: beaming

Imperative
beam
beam

Present
I beam
you beam
he/she/it beams
we beam
you beam
they beam

Preterite
I beamed
you beamed
he/she/it beamed
we beamed
you beamed
they beamed

Present Continuous
I am beaming
you are beaming
he/she/it is beaming
we are beaming
you are beaming
they are beaming

Present Perfect
I have beamed
you have beamed
he/she/it has beamed
we have beamed
you have beamed
they have beamed

Past Continuous
I was beaming
you were beaming
he/she/it was beaming
we were beaming
you were beaming
they were beaming

Past Perfect
I had beamed
you had beamed
he/she/it had beamed
we had beamed
you had beamed
they had beamed

Future
I will beam
you will beam
he/she/it will beam
we will beam
you will beam
they will beam

Future Perfect
I will have beamed
you will have beamed
he/she/it will have beamed
we will have beamed
you will have beamed
they will have beamed

Future Continuous
I will be beaming
you will be beaming
he/she/it will be beaming
we will be beaming
you will be beaming
they will be beaming

Present Perfect Continuous
I have been beaming
you have been beaming
he/she/it has been beaming
we have been beaming
you have been beaming
they have been beaming

Future Perfect Continuous
I will have been beaming
you will have been beaming
he/she/it will have been beaming
we will have been beaming
you will have been beaming
they will have been beaming

Past Perfect Continuous
I had been beaming
you had been beaming
he/she/it had been beaming
we had been beaming
you had been beaming
they had been beaming

Conditional
I would beam
you would beam
he/she/it would beam
we would beam
you would beam
they would beam

Past Conditional
I would have beamed
you would have beamed
he/she/it would have beamed
we would have beamed
you would have beamed
they would have beamed

Beam

The beam is attached to the bottom of a Walking turning plow, extends to the front, and is terminated with a Plow clevis, to which an Evener or Doubletree can be attached. The beam may be of either wood or steel, depending on when the plow was manufactured, or in some cases, on the intended kind of soil to be plowed. In the horse-drawn era, if the plow was likely to catch on rocks or stumps and there were enough horses pulling it to bend a steel beam, it was often preferable to have a breakable and more cheaply replaced wooden beam.

Thesaurus

Noun	1.	beam - a signal transmitted along a narrow path; guides airplane pilots in darkness or bad weatherradio beamsignal, signaling, sign - any nonverbal action or gesture that encodes a message; "signals from the boat suddenly stopped"
	2.	beam - long thick piece of wood or metal or concrete, etc., used in constructionbox beam, box girder - a beam built up from boards; has a hollow rectangular cross sectioncantilever - projecting horizontal beam fixed at one end onlygirder - a beam made usually of steel; a main support in a structureheader - a framing member crossing and supporting the ends of joists, studs, or rafters so as to transfer their weight to parallel joists, studs, or rafterslintel, header - horizontal beam used as a finishing piece over a door or windowjoist - beam used to support floors or roofskeel - one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stabilitykeelson - a longitudinal beam connected to the keel of ship to strengthen itpiece - a separate part of a whole; "an important piece of the evidence"rafter, balk, baulk - one of several parallel sloping beams that support a roofrider plate - a horizontal beam (or plate) connected to the top of a ship's vertical keel or to the keelsonridgepole, rooftree, ridge - a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of raftersshoring, shore - a beam or timber that is propped against a structure to provide supportstructural member - support that is a constituent part of any structure or buildingtie beam, tie - a horizontal beam used to prevent two other structural members from spreading apart or separating; "he nailed the rafters together with a tie beam"timber - a beam made of woodcrossbeam, crosspiece, trave, traverse - a horizontal beam that extends across somethingwood - the hard fibrous lignified substance under the bark of trees
	3.	beam - a group of nearly parallel lines of electromagnetic radiationelectron beam, raycathode ray - a beam of electrons emitted by the cathode of an electrical discharge tubeelectromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric chargeparticle beam - a collimated flow of particles (atoms or electrons or molecules)
	4.	beam - a column of light (as from a beacon)light beam, ray, ray of light, beam of light, shaft of light, irradiation, shaftheat ray - a ray that produces a thermal effecthigh beam - the beam of a car's headlights that provides distant illuminationlight, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"moon ray, moonbeam, moon-ray - a ray of moonlightsunbeam, sunray - a ray of sunlightlaser beam - a beam of light generated by a laserlow beam - the beam of a car's headlights that provides illumination for a short distance
	5.	beam - (nautical) breadth amidships ship - a vessel that carries passengers or freightwidth, breadth - the extent of something from side to side
	6.	beam - the broad side of a ship; "they sighted land on the port beam"side - an extended outer surface of an object; "he turned the box over to examine the bottom side"; "they painted all four sides of the house"
	7.	beam - a gymnastic apparatus used by women gymnastsbalance beamexerciser, gymnastic apparatus - sports equipment used in gymnastic exercises
Verb	1.	beam - smile radiantly; express joy through one's facial expressionsmile - change one's facial expression by spreading the lips, often to signal pleasure
	2.	beam - emit light; be bright, as of the sun or a light; "The sun shone bright that day"; "The fire beamed on their faces"shinebeat down - shine hard; "The sun beat down on the hikers"beacon - shine like a beaconglare - shine intensely; "The sun glared down on us"flame, flare - shine with a sudden light; "The night sky flared with the massive bombardment"outshine - shine brighter than; "What star outshines the sun?"shimmer - shine with a weak or fitful light; "Beech leaves shimmered in the moonlight"flicker, flick - shine unsteadily; "The candle flickered"blaze - shine brightly and intensively; "Meteors blazed across the atmosphere"winkle, twinkle, scintillate - emit or reflect light in a flickering manner; "Does a constellation twinkle more brightly than a single star?"burn, glow - shine intensely, as if with heat; "The coals were glowing in the dark"; "The candles were burning"
	3.	beam - express with a beaming face or smile; "he beamed his approval"evince, express, show - give expression to; "She showed her disappointment"
	4.	beam - broadcast over the airwaves, as in radio or television; "We cannot air this X-rated song"broadcast, air, transmit, sendbroadcast medium, broadcasting - a medium that disseminates via telecommunicationspublicize, bare, publicise, air - make public; "She aired her opinions on welfare"satellite - broadcast or disseminate via satellitesportscast - broadcast a sports eventtelecast, televise - broadcast via television; "The Royal wedding was televised"interrogate - transmit (a signal) for setting off an appropriate response, as in telecommunicationrebroadcast, rerun - broadcast again, as of a film
	5.	beam - have a complexion with a strong bright color, such as red or pink; "Her face glowed when she came out of the sauna"glow, radiate, shineappear, seem, look - give a certain impression or have a certain outward aspect; "She seems to be sleeping"; "This appears to be a very difficult problem"; "This project looks fishy"; "They appeared like people who had not eaten or slept for a long time"
	6.	beam - experience a feeling of well-being or happiness, as from good health or an intense emotion; "She was beaming with joy"; "Her face radiated with happiness"glow, radiate, shinefeel, experience - undergo an emotional sensation or be in a particular state of mind; "She felt resentful"; "He felt regret"

beam

verb1. smile, grin, be all smiles She beamed at her friend with undisguised admiration.2. transmit, show, air, broadcast, cable, send out, relay, televise, radio, emit, put on the air The interview was beamed live across America.3. radiate, flash, shine, glow, glitter, glare, gleam, emit light, give off light A sharp white spotlight beamed down on a small stage.noun1. ray, bar, flash, stream, glow, radiation, streak, emission, shaft, gleam, glint, glimmer a beam of light2. rafter, support, timber, spar, plank, girder, joist The ceilings are supported by oak beams.3. smile, grin She knew he had news, because of the beam on his face.

beam

noun1. A large, oblong piece of wood or other material, used especially for construction:balk, rafter, timber.2. A series of particles or waves traveling close together in parallel paths:ray, shaft.verb1. To emit a bright light:blaze, burn, gleam, glow, incandesce, radiate, shine.2. To curve the lips upward in expressing amusement, pleasure, or happiness:grin, smile.Idioms: break into a smile, crack a smile.

Translations

光束发射梁笑逐颜开船的最大宽度

beam

(biːm) noun1. a long straight piece of wood, often used in ceilings. 梁2. a ray of light etc. a beam of sunlight. （光）束 3. the greatest width of a ship or boat. （船的）最大宽度 verb1. to smile broadly. She beamed with delight.笑逐颜开2. to send out (rays of light, radio waves etc). This transmitter beams radio waves all over the country. 发射（光、无线电波等）

beam

→ 光束zhCN

beam

1. any rigid member or structure that is loaded transversely 2. the breadth of a ship or boat taken at its widest part, usually amidships 3. one of the two cylindrical rollers on a loom, one of which holds the warp threads before weaving, the other the finished work 4. the main stem of a deer's antler from which the smaller branches grow 5. a narrow unidirectional flow of electromagnetic radiation or particles 6. the horizontal centrally pivoted bar in a balance 7. off (the) beam not following a radio beam to maintain a course 8. on the beama. following a radio beam to maintain a course b. Nautical opposite the beam of a vessel; abeam

beam

1. The region of sky to which a radio telescope is sensitive, equaling the region it would illuminate were its antennas to be used to transmit signals. In aperture synthesis the primary beam is the region to which the individual antennas are sensitive and defines the maximum size of the synthesized map. The synthesized beam is a theoretical beam pattern corresponding to the Fourier transform of the synthesized aperture and defines the resolution of the map. See also antenna. 2. A well-defined elongated region of space down which energy is passing. In the beam model of double radio sources (see radio-source structure), the central galaxy shoots out two beams in opposite directions in which the energy may be transported by relativistic electrons, low-frequency waves, or some other mechanism. Hot spots are formed where the beams impinge on the surrounding intergalactic medium. See also jet.

Beam

A rigid structural member whose prime function is to carry and transfer transverse loads across a span to the supports; as a joist, girder, rafter, or purlin.

arched beam

A beam whose upper surface is slightly curved, similar to a camber beam.

bolster beam

A timber or steel beam that supports the end of a bridge truss on an abutment or pier; it is set perpendicular to the trusses.

box beam

One or more vertical plywood webs laminated to seasoned wood flanges. Vertical spacers separate the flanges at intervals along the length of the beam to distribute the loads and to provide stiffness.

built-up beam

A beam composed of multiple parts, such as a box beam, compound beam, lattice beam, and angle girder.

camber beam

A beam curved slightly upward toward the center.

channel beam

A channel used as a beam, typically with the web in the vertical position.

collar beam

A horizontal member that ties together two opposite common rafters, usually at a point halfway up the length of the rafters below the ridge.

continuous beam

A beam that is continuous over intermediate supports and thus statically indeterminate; as opposed to a simply supported beam.

crossbeam

A beam that runs transversely through the centerline of a structure; any transverse beam in a structure such as a joist.

edge beam

A beam at the edge of a shell plate structure, providing stiffness that provides an increase in the load-bearing capacity.

encased beam

Iron and steel beams that are encased in a variety of materials for protection against fire.

grade beam

Reinforced concrete beam or slab that is normally placed directly on the ground.

hammer beam

One of a pair of short horizontal members, attached to the foot of a principal rafter, located within a roof structure in place of a tie beam.

I-beam

An iron or steel beam with a symmetrical I-shaped cross section.

laminated beam

A wood beam composed of a series of overlapping wood members that are glued together.

open web beam

A truss with parallel top and bottom chords formed by a pair of angles, employing a web of diagonal struts and used as a beam; the struts connecting the top and bottom chords are also composed of steel bars.

plate girder

A steel beam built up from vertical web plates and horizontal flange plates.

simple beam

A beam without restraint or continuity at the supports, as opposed to a fixed-end beam.

summerbeam

A large horizontal beam in the ceiling of an American colonial timber-framed house.

tie beam

In roof framing, a horizontal timber connecting two opposite rafters at their lower ends to prevent them from spreading.

trussed beam

A beam or purlin stiffened with a tie rod.

welded beam

A large steel I-section, fabricated by welding from plates instead of hot rolling; same as a plate girder.

Beam

in engineering a structural element, usually in the form of a girder, which is primarily subjected to bending.

Beams are used extensively in construction and in mechanical engineering in the structures of buildings, bridges, trestles, transport means, machinery, machine tools, and so forth. Beams are manufactured basically out of reinforced concrete, metal, and wood. Depending upon the number of supports and the nature of the support constraints, beams may be differentiated as single-span, multi-span, cantilever, with fixed ends, simple, continuous, and others. According to the shape of its cross section, a beam may be classified as rectangular, T-shaped, I-shaped, box-shaped, and so forth. The most efficient beam cross sections (for bearing capacity as well as for material expenditure)— for example, the I-beams and the box beams—are characterized by a concentration of material at the upper and the lower edges of the cross section, where the maximum normal bending stresses are acting. Rectangular sections are expedient in beams of relatively large height and small width.

Beams may have sections that are constant or variable in their dimensions; a beam with variable cross section permits a decrease in its mass. According to their purpose, beams may be classified as primary (longitudinal beams, which cover a span between supports) and auxiliary (transverse beams, which cover distances between other beams). A system of longitudinal and transverse beams is called a grid of beams.

Reinforced concrete beams are manufactured as monolithic or precast. Monolithic beams are designed, in most cases, as multispan continuous beams. They usually have a rectangular or a T-shaped section; the latter are frequently encountered in ribbed construction (where a monolithic beam is rigidly connected with a slab) and more rarely, in the form of independent beams. Precast reinforced concrete is widely used for single-span beams with various sections, such as rectangular, T-shaped, I-shaped, hollow, and II-shaped. Precast multispan continuous beams are composed of several elements, joined together during the installation process. Prestressed reinforced concrete beams have become widespread.

Metallic beams are utilized, for the most part, for heavy loads. The most effective metallic beams are those with I-shaped (rolled or composite) and box-shaped (composite) sections. Composite beams may have a practically limitless height and bearing capacity.

Wooden beams usually serve to cover short spans and occur in the form of single-span and simple structures. They are made of boards, joists, and logs. In order to increase the bearing capacity of these structures, composite sections are employed, using dowels, pegs, or adhesives.

Calculation of the strength, rigidity, and stability of a beam is usually carried out according to the laws of the strength of materials. Beams are calculated according to loads—that is, dead load (from their own masses and the masses of the structures resting upon them) and live or work load. The determination of support reactions, bending moments, lateral forces, and deflections in statically determinate beams is accomplished analytically or graphically on the basis of the equations of equilibrium. Statically nondeterminate continuous beams are usually calculated with the aid of trinomial equations (equations of three moments) when rigid supports are to be used and equations with five terms when there is elastic displacement. In order to calculate beams which are to lie on a yielding foundation (for example, soil), foundation calculation models are utilized. Selection of the beam section is done basically according to the bending moment (normal stresses) that the beam will have to undergo. Besides this, the section is tested for the action of lateral forces (tangential stresses) and principal stresses. In special cases, beams are calculated for stability. The determination of the tangential stresses in beams was first proposed by the Russian engineer D. I. Zhuravskii.

L. V. KASAB’IAN

Beam

(or ray), a concept in geometric optics (light ray) and geometric acoustics (sound ray) that designates the line of propagation of the energy flux emitted in a certain direction by a point source of light or sound. In a homogeneous medium a ray is a straight line. A ray in a medium with smoothly varying optical or acoustic properties is curved, and its curvature is proportional to the gradient of the index of refraction of the medium. Upon passing through a boundary that separates two mediums having different indexes of refraction, a ray is refracted according to Snell’s law of refraction. The term “beam” (“ray”) is also used to designate a narrow beam of particles, such as an electron beam or cathode ray.

Beam

a linear, usually horizontal supporting member in a building or some other structure. The beams connect, sometimes by hinge joint, the vertical members and serve as supports for other horizontal members and slabs in floors, ceilings, and roofs. Beams are made of metal, reinforced concrete, or wood. They may be of lattice or solid construction (with a rectangular, T, double-T, or some other cross section).

beam

[bēm] (civil engineering) A body, with one dimension large compared with the other dimensions, whose function is to carry lateral loads (perpendicular to the large dimension) and bending movements. (naval architecture) The width of a ship at its widest point. (physics) A concentrated, nearly unidirectional flow of particles, or a like propagation of electromagnetic or acoustic waves. (textiles) Spool-shaped holder, 8 to 12 feet (2.4 to 3.7 meters) in length, on which is wrapped yarn that is to be transferred to the warp holder of a loom.

Beam

A structural member that is fabricated from metal, reinforced or prestressed concrete, wood, fiber-reinforced plastic, or other construction materials and that resists loads perpendicular to its longitudinal axis. Its length is usually much larger than its depth or width. Usually beams are of symmetric cross section; they are designed to bend in this plane of symmetry, which is also the plane of their greatest strength and stiffness. This plane coincides with the plane of the applied loads. Beams are used as primary load-carrying members in bridges and buildings.

beam

1. A structural member whose prime function is to carry transverse loads, as a joist, girder, rafter, or purlin. The term beam may be modified by an adjective indicating its location; as, for example, an end beam or side beam. See anchor beam, binding beam, breastsummer beam, camber beam, ceiling beam, collar beam, cross beam, dragon beam, floor beam, ground beam, hammer beam, I-beam, laced beam, perimeter beam, summerbeam, tie beam, top beam, wind beam2. A group of nearly parallel rays of light.

beam

A localizer with both front beam and back beam. beam

i. A processed and directed pulse of energy.
ii. An invisible path produced by radio signals. An aircraft can follow the beam when approaching or going away from a navigational fix. A radar detects an aircraft when it is illuminated by its beam.
iii. A long, heavy, metallic or wooden member in any structure to withstand any bending and I-beam shearing loads.
iv. The direction extending from the side of an airplane at right angles to the plane of symmetry.
v. The breadth at its maximum width of an airplane fuselage, hull, or vessel.

beam

[Star Trek Classic's "Beam me up, Scotty!"] To transfersoftcopy of a file electronically; most often in combiningforms such as "beam me a copy" or "beam that over to hissite". Compare blast, snarf, BLT.

beam

beam

beam

beam

Beam

beam

Beam

beam

beam

beam

beam

beam

beam

beam

beam

beam

Beam

arched beam

bolster beam

box beam

built-up beam

camber beam

channel beam

collar beam

continuous beam

crossbeam

edge beam

encased beam

grade beam

hammer beam

I-beam

laminated beam

open web beam

plate girder

simple beam

summerbeam

tie beam

trussed beam

welded beam

Beam

Beam

Beam

beam

Beam

beam

beam

beam

beam

BEAM

beam

beam

beam

BEAM

beam

beam

BEAM

beam

Synonyms for beam

verb smile

Synonyms

verb transmit

Synonyms

verb radiate

Synonyms

noun ray

Synonyms

noun rafter

Synonyms

noun smile

Synonyms

Synonyms for beam

noun a large, oblong piece of wood or other material, used especially for construction

Synonyms

noun a series of particles or waves traveling close together in parallel paths

Synonyms

verb to emit a bright light

Synonyms

verb to curve the lips upward in expressing amusement, pleasure, or happiness

Synonyms

Synonyms for beam