| 释义 |
transmission
trans·mis·sion T0321400 (trăns-mĭsh′ən, trănz-)n.1. a. The act or process of transmitting.b. The fact of being transmitted.2. Something, such as a message, that is transmitted.3. An assembly, as in a motor vehicle, that transmits power from an engine to a driving axle, usually having a manually or automatically adjustable mechanism to control the balance of power and speed. Also called gearbox.4. The sending of a signal, picture, or other information from a transmitter.
[Latin trānsmissiō, trānsmissiōn-, a sending across, from trānsmissus, past participle of trānsmittere, to transmit; see transmit.]
trans·mis′sive (-mĭs′ĭv) adj.transmission (trænzˈmɪʃən) n1. the act or process of transmitting2. something that is transmitted3. (General Physics) the extent to which a body or medium transmits light, sound, or some other form of energy4. (Mechanical Engineering) the transference of motive force or power5. (Mechanical Engineering) a system of shafts, gears, torque converters, etc, that transmits power, esp the arrangement of such parts that transmits the power of the engine to the driving wheels of a motor vehicle6. (Broadcasting) the act or process of sending a message, picture, or other information from one location to one or more other locations by means of radio waves, electrical signals, light signals, etc7. (Broadcasting) a radio or television broadcast[C17: from Latin transmissiō a sending across; see transmit] transˈmissible adj transˌmissiˈbility n transˈmissive adj transˈmissively adv transˈmissiveness ntrans•mis•sion (trænsˈmɪʃ ən, trænz-)
n. 1. the act or process of transmitting. 2. the fact of being transmitted. 3. something that is transmitted. 4. a. the transference of force between machines or mechanisms, often with changes of torque and speed. b. a compact, enclosed unit of gears or the like for this purpose. 5. the broadcasting of radio waves from one location to another, as from a transmitter to a receiver. [1605–15; < Latin trānsmissiō trip to the other side =trānsmitt(ere) to send across (see transmit) + -tiō -tion] trans•mis′sive (-ˈmɪs ɪv) adj. trans•mis′sive•ly, adv. trans`mis•siv′i•ty, n. Thesaurus| Noun | 1. |  transmission - the act of sending a message; causing a message to be transmittedtransmittal, transmittingsending - the act of causing something to go (especially messages)forwarding - the act of sending on to another destination; "the forwarding of mail to a new address is done automatically"; "the forwarding of resumes to the personnel department"mailing, posting - the transmission of a letter; "the postmark indicates the time of mailing"telephotography - transmission and reproduction of photographs and charts and pictures over a distance | | 2. |  transmission - communication by means of transmitted signalscommunicating, communication - the activity of communicating; the activity of conveying information; "they could not act without official communication from Moscow"impartation, imparting, conveyance - the transmission of informationairing, dissemination, public exposure, spreading - the opening of a subject to widespread discussion and debatechannel, transmission channel - a path over which electrical signals can pass; "a channel is typically what you rent from a telephone company"channels - official routes of communication; "you have to go through channels"mass medium, medium - (usually plural) transmissions that are disseminated widely to the publicmultimedia, multimedia system - transmission that combine media of communication (text and graphics and sound etc.)electronic communication - communication by computerfiber optics, fiberoptics, fibre optics, fibreoptics - the transmission of light signals via glass fibersmodulation - (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phasecheck character - a character that is added to the end of a block of transmitted data and used to check the accuracy of the transmissionuplink - a transmission from Earth to a spacecraft or the path of such a transmissioninterrogation - a transmission that will trigger an answering transmission from a transponder | | 3. |  transmission - the fraction of radiant energy that passes through a substancetransmittancecoefficient - a constant number that serves as a measure of some property or characteristic | | 4. | transmission - an incident in which an infectious disease is transmittedcontagion, infectionincident - a single distinct event | | 5. |  transmission - the gears that transmit power from an automobile engine via the driveshaft to the live axletransmission systemautomatic drive, automatic transmission - a transmission that automatically changes the gears according to the speed of the carclutch - a coupling that connects or disconnects driving and driven parts of a driving mechanism; "this year's model has an improved clutch"drive line, drive line system - mechanism that transmits power from the engine to the driving wheels of a motor vehiclefluid drive - an automotive power coupling4WD, four-wheel drive - a transmission that provides power directly to all four wheels of a motor vehiclegear mechanism, gear - a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)gear box, gear case, gearbox - the shell (metal casing) in which a train of gears is sealedhydraulic transmission, hydraulic transmission system - a transmission that depends on a hydraulic systemstandard transmission, stick shift - a transmission that is operated manually with a gear lever and a clutch pedal |
transmissionnoun1. transfer, spread, spreading, communication, passing on, circulation, dispatch, relaying, mediation, imparting, diffusion, transference, dissemination, conveyance, channeling the transmission of knowledge and skills2. broadcasting, showing, putting out, relaying, sending The transmission of the programme was brought forward.3. programme, broadcast, show, production, telecast A webcast is a transmission using the internet.Translationstransmit (trӕnzˈmit) – past tense, past participle transˈmitted – verb1. to pass on. He transmitted the message; Insects can transmit disease. 傳遞 传播，传送 2. to send out (radio or television signals, programmes etc). The programme will be transmitted at 5.00 p.m. 發射(訊號)，播送(電視或電台的節目) 发射（讯号），播送（电视或电台的节目） transˈmission (-ʃən) noun1. the act of transmitting. the transmission of disease / radio signals. (電視或電台的)播送，傳播(疾病等)，傳遞(訊息等)，發射(訊息等) 播送，传播 2. a radio or television broadcast. (電視或電台的)播送 （电视或电台的）播送 transˈmitter noun an apparatus for transmitting, or a person who transmits. a radio transmitter. 發射器，傳送者 发射机，传送者 - A standard transmission, please (US)
A manual, please (UK) → 我要一辆手动档的 - The transmission isn't working (US)
The gears are not working (UK) → 换不了挡了 - The transmission is broken (US)
The gearbox is broken (UK) → 变速箱坏了
transmission
transmission, in automobiles, system of parts connecting the engine to the wheels. Suitable torque, or turning force, is generated by the engine only within a narrow range of engine speeds, i.e., rates at which the crankshaft is turning. However, the wheels must turn with suitable torque over a wide range of speeds. While its speed is held roughly constant, the engine turns an input shaft on the transmission whose output shaft can be adjusted to turn the wheels at an appropriate speed. The simplest transmissions are manual transmissions, and consist of a system of interlocking gearwheels. These wheels are arranged so that by operating a lever the driver can choose one of several ratios of speed between the input shaft and the output shaft. These ratios are called gears, first gear being the arrangement that gives the lowest output speed, second gear the next lowest, and so forth. To allow smooth shifting from one gear to another, a clutch is provided to disengage the engine from the transmission. The commonly used dry single disk clutch has a steel disk with a friction lining that is sandwiched between a flywheel on the engine shaft and a pressure plate on the transmission input shaft. When the driver takes his foot off the clutch pedal, springs squeeze the friction disk into the space between the flywheel and the pressure plate, enabling the engine shaft to turn the transmission. For many cars and for normal driving conditions a transmission with three forward gears and one reverse gear is sufficient. In cars having small engines transmissions with four or five forward speeds are used; racing cars often have as many as six forward speeds. A synchromesh transmission is a manual transmission in which all forward gear wheels are held in mesh at all times. Used on most American cars with a manual transmission, it allows the driver to shift gears more smoothly and makes the car run more quietly. The automatic transmission, introduced in 1939, switches to the optimum gear without driver intervention except for starting and going into reverse. The type of automatic transmission used on current American cars usually consists of a fluid device called a torque converter and a set of planetary gears. The torque converter transmits the engine's power to the transmission using hydraulic fluid to make the connection. For more efficient operation at high speeds, a clutch plate is applied to create a direct mechanical connection between the transmission and the engine. The introduction of microprocessor-controlled electronic sensors has enhanced the performance of automatic transmissions still more. Data about engine speed, exhaust pressure, and other performance characteristics are sent to a processor that controls the changing of gears and the clutch plate in the torque converter via electrical switches, or solenoids. New approaches to transmission design combine the best features of manual and automatic transmissions to provide more efficient ways of channeling engine power to the wheels. A manumatic transmission is an automatic transmission with an added manual-shift mode; typically, a floor-mounted shifter offers an alternative selector path supplemented by buttons mounted on the steering wheel. A continuously variable transmission (CVT) uses a belt that connects two variable-diameter pulleys to provide an unlimited number of ratio changes and uninterrupted power to the wheels; CVT transmissions offer better fuel efficiency than conventional automatic transmissions, which change the transmission ratio by shifting gears. A sequential manual gearbox (SMG), developed for Formula One cars, uses computer-controlled actuators to operate the clutch and change gears when prompted by the driver; both manual and automatic modes are possible, and there is no clutch pedal. The dual clutch transmission (DCT), also called the direct shift gearbox (DSG), substitutes dual clutches for the conventional single-sided clutch to transfer power from the engine through two parallel paths; the gearbox features two sets of gears, identical to those in conventional manual transmissions—one set being the odd gears (1st, 3rd, 5th) and the other the even gears (2nd, 4th, 6th)—the gears must be shifted in sequence, and power to the wheels is never interrupted. TransmissionA general term for the passage of energy from one side of a medium to the other.Transmission a mechanism for stepped variation of the gear ratio (the speed of rotation or feed rate). A transmission consists of interchangeable gear drives installed in a separate housing or in a common housing with other mechanisms. The transmission used to change the speed of the main cutting motion of metal-cutting machines is also called a gearbox. The gearbox designed for changing the feed in metal-cutting machines, which has certain special kinematic features, is called a feed box. Transmissions are widely used to transmit power to the driving wheels of automobiles and other transportation vehicles powered by internal-combustion engines, which cannot develop high torque and power at low speeds of rotation and also do not permit a change in the direction of shaft rotation (reversing). The use of a transmission makes possible the generation of sufficient torque at the wheels, as well as providing reversing and efficient engine performance at various speeds. The gear ratios u of transmissions usually correspond to a geometric progression (u1,u2 = ϕu1, u3 = ϕ2u1,…), which provides the same relative increase in u upon shifting from one speed to the next. In the USSR the values of u are standardized: 1.06, 1.12, 1.26, 1.41, 1.58, and 2.00. A stepped geometric progression with a different ϕ for certain sections of the control range, or an arithmetic progression (for example, in a feed box), is sometimes used. The construction of a transmission depends on its purpose, the method of changing gears and the specifications of the machine or tool: transmitted power, speed, number of speeds (up to 48), and control range. For overdrive transmissions, a gear ratio u of not less than 1:2 is usually used; for underdrive transmissions, the ratio is not more than 4, and the number of transmissions between two shafts is not more than 6–8. According to the method of changing gears, a distinction is made among transmissions with sliding gear clusters (with dog and toothed clutches), transmissions that have toothed clutches with synchronizing devices, transmissions with friction clutches and brakes, and transmissions with overrunning clutches. Gear boxes with sliding clusters permit shifting only after stopping or at a low idle speed; they are of simple and compact construction and are widely used in metal-cutting machines with a large number of speeds. At low values of ϕ the transmission may be simplified in design and made shorter by means of gear shaving, which allows one gear to mesh with different gears on other shafts. Transmissions that have gear clutches with synchronizing devices make it possible to first put in contact small friction surfaces, which equalize the angular speeds of the shaft and engaged gear, and then to engage the clutch coupling. Such transmissions provide smooth shifting at idle and are used mainly in motor vehicles. Transmissions with friction clutches and brakes permit shifting while running under load, and the use of clutches and brakes with electromagnetic, hydraulic, or pneumatic control provides remote shifting and the possibility of automation. Because of their complex construction and large size, such transmissions are used for a low number of speeds; brake shifting is used in planetary transmissions. Transmissions with overrunning clutches shift gears and change the direction of rotation of the drive shaft while the direction of rotation of the driven shaft remains unchanged; such transmissions are rarely used. The changing of gears in transmissions is accomplished by individual control mechanisms, in which each gear cluster or clutch coupling is shifted by a separate lever; by centralized control mechanisms (of consecutive and selective engagement and with preliminary selection, or preselective), in which all gear cluster or clutch couplings are shifted by a common lever; by electrical and other remote-control devices; and by automatic control devices that shift speeds in relation to changing operating conditions. The disadvantages of transmissions in comparison with mechanical variometers are stepped changing of the gear ratio and less convenient control. Their advantages—a rigid kinematic connection (strict uniformity of the gear ratios between the driving and driven shafts), high reliability and durability, and compactness and simplicity of construction—have brought about their widespread use in modern machines. REFERENCEMashinostroenie: Entsiklopedicheskii spravochnik, vol. 11. Moscow, 1948.N. IA. NIBERG
Transmission in optics, the passage of optical radiation through a medium, occurring without a change in the composition or in the relative intensities of the monochromatic component frequencies of the radiation. Transmission is classified as (1) direct, if there is no scattering of light in the medium (or if such scattering is negligibly small), (2) diffuse, if scattering in the medium is the determining factor and refraction within the medium and direct transmission are of no marked significance, or (3) mixed, if the transmission is partly direct and partly diffuse. A uniformly diffuse transmission is a special case of diffuse transmission in which the spatial distribution of diffuse radiation is such that the luminance is the same in all directions.
Transmission a device for the transfer of mechanical energy from a motor to the moving parts of machines, such as lathes and mills. Rotation is usually transmitted from the driveshaft to the machine by a drive belt or countershaft. In modern technology, the term “transmission” is understood to mean an entire set of devices, from the engine shaft to the working parts of the machine in which it is installed. Thus, in an automobile or tractor, the power transmission, clutch, Cardan mechanism, and differential are components of the mechanical transmission. Hydromechanical, hydraulic, and electromechanical transmissions are also used in diesel locomotives, ships, trucks, and tractors. Hydromechanical transmissions consist of a torque converter and a mechanical gear box, hydraulic transmissions have a hydraulic pump and hydraulic motors, and electromechanical transmissions have a generator and electric motors. transmission[tranz′mish·ən] (electronics) The process of transferring a signal, message, picture, or other form of intelligence from one location to another location by means of wire lines, radio, light beams, infrared beams, or other communication systems. A message, signal, or other form of intelligence that is being transmitted. (electromagnetism) transmittance (mechanical engineering) The gearing system by which power is transmitted from the engine to the live axle in an automobile. Also known as gearbox. transmission1. the extent to which a body or medium transmits light, sound, or some other form of energy 2. the transference of motive force or power 3. a system of shafts, gears, torque converters, etc., that transmits power, esp the arrangement of such parts that transmits the power of the engine to the driving wheels of a motor vehicle transmissionThe transfer of data over a communications channel.transmission
transmission [trans-mish´un] 1. a passage or transfer, as of a disease from one individual to another, or of neural impulses from one neuron to another.2. the communication of inheritable qualities from parent to offspring.horizontal transmission the spread of an infectious agent from one individual to another, usually through contact with bodily excretions or fluids, such as sputum or blood, that contain the agent.vertical transmission transmission from one generation to another. The term is restricted by some to genetic transmission and extended by others to include also transmission of infection from one generation to the next, as by milk or through the placenta.trans·mis·sion (trans-mish'ŭn), 1. Synonym(s): transfer2. The conveyance of disease from one person to another. 3. The passage of a nerve impulse across an anatomic cleft, as in autonomic or central nervous system synapses and at neuromuscular junctions, by activation of a specific chemical mediator that stimulates or inhibits the structure across the synapse. 4. In general, passage of energy through a material. [L. transmissio, a sending across] transmission Infectious disease The process by which a pathogen passes from a source of infection to a new host Major types Horizontal transmission, which constitutes the majority, and consists of the spread from one person to another by direct contact, aerosol, fecal contamination, etc, and vertical transmission–mother to infant in the birth canal. See Aerosol transmission, Cyclopropagative transmission, Direct transmission, Droplet spread transmission, Hemo-oral transmission, Hereditary transmission, Horizontal transmission, Indirect transmission, Line-of-sight transmission, Maternal-infant transmission, Nondirect transmission, Reverse transmission, Vehicle-borne transmission, Vertical transmission. trans·mis·sion (trans-mish'ŭn) 1. Synonym(s): transfer. 2. The conveyance of disease from one person to another. 3. The passage of a nerve impulse across an anatomic cleft, as in autonomic or central nervous system synapses and at neuromuscular junctions, by activation of a specific chemical mediator that stimulates or inhibits the structure across the synapse. 4. In general, passage of energy through a material. [L. transmissio, a sending across]transmission Passage of radiations through a medium or a substance. Transmission can be either diffuse (light is scattered in all directions) or regular (i.e. without diffusion). See absorption; translucent; transmittance; transparent.trans·mis·sion (trans-mish'ŭn) 1. Conveyance of disease from one person to another. 2. Passage of a nerve impulse across an anatomic cleft. [L. transmissio, a sending across]Patient discussion about transmissionQ. How flu is passing? I have too small children, and in the class of the older one there’s an outbreak of flu with many sick children. The last time my little son had the flu was like a hell for him, and I really won’t to prevent it. What can I do?A. The virus (the creature that cause flu is spread in secretions from the nose, mouth etc, and children may be infective even days before they actually have visible disease.
However, simple measures, such as covering the nose and mouth while sneezing or coughing and washing hands thoroughly may minimize the transmission of the flu from child to child.
Q. Do I have hepatitis? I'm volunteering in a shelter for homeless people, and there are many drug addicts there. Yesterday, as I was serving them food one of the residents of the shelter (who I know to be a long term drug addict that uses heroine) coughed and expelled blood on my bare hands (apparently he had some lung disease).Do I now have hepatitis? I know that it's very common among drug addicts, and that it's transmitted through blood contact. I checked my hands and I didn't have any wounds or scratches, but I heard the virus can infect you even if you don't have any wound, is that right?A. The chances of you getting hep c are very slim to none but my ? to you is why were you not wearing gloves to serve food ? More discussions about transmissionTransmission
Related to Transmission: automatic transmission, Electrical transmissionTRANSMISSION, civ. law. The right which heirs or legatees may have of passing to their successors, the inheritance or legacy to which they were entitled, if they happen to die without having exercised their rights. Domat, liv. 3, t. 1, s. 10; 4 Toull. n. 186; Dig. 50, 17, 54; Code, 6, 51. See XMISSION
See TXtransmission
Related to transmission: automatic transmission, Electrical transmissionSynonyms for transmissionnoun transferSynonyms- transfer
- spread
- spreading
- communication
- passing on
- circulation
- dispatch
- relaying
- mediation
- imparting
- diffusion
- transference
- dissemination
- conveyance
- channeling
noun broadcastingSynonyms- broadcasting
- showing
- putting out
- relaying
- sending
noun programmeSynonyms- programme
- broadcast
- show
- production
- telecast
Synonyms for transmissionnoun the act of sending a messageSynonymsRelated Words- sending
- forwarding
- mailing
- posting
- telephotography
noun communication by means of transmitted signalsRelated Words- communicating
- communication
- impartation
- imparting
- conveyance
- airing
- dissemination
- public exposure
- spreading
- channel
- transmission channel
- channels
- mass medium
- medium
- multimedia
- multimedia system
- electronic communication
- fiber optics
- fiberoptics
- fibre optics
- fibreoptics
- modulation
- check character
- uplink
- interrogation
noun the fraction of radiant energy that passes through a substanceSynonymsRelated Wordsnoun an incident in which an infectious disease is transmittedSynonymsRelated Wordsnoun the gears that transmit power from an automobile engine via the driveshaft to the live axleSynonymsRelated Words- automatic drive
- automatic transmission
- clutch
- drive line
- drive line system
- fluid drive
- 4WD
- four-wheel drive
- gear mechanism
- gear
- gear box
- gear case
- gearbox
- hydraulic transmission
- hydraulic transmission system
- standard transmission
- stick shift
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