switch

S0948400 (swĭch)n.1. a. An exchange or a swap, especially one done secretly.b. A transference or shift, as of opinion or attention.2. a. A device used to break or open an electric circuit or to divert current from one conductor to another.b. A device consisting of two sections of railroad track and accompanying apparatus used to transfer rolling stock from one track to another.3. a. A slender flexible rod, stick, or twig, especially one used for whipping.b. The bushy tip of the tail of certain animals: a cow's switch.c. A thick strand of real or synthetic hair used as part of a coiffure.d. A flailing or lashing, as with a slender rod: gave the ox a switch.v. switched, switch·ing, switch·es v.tr.1. a. To exchange: asked her brother to switch seats with her.b. To shift, transfer, or divert: switched the conversation to a lighter subject.2. a. To connect, disconnect, or divert (an electric current) by operating a switch.b. To cause (an electric current or appliance) to begin or cease operation: switched the lights on and off.c. Informal To produce as if by operating a control. Often used with on: switched on the charm.3. To move (rolling stock) from one track to another; shunt.4. a. To whip with a switch, especially in punishing a child.b. To jerk or swish abruptly or sharply: a cat switching its tail.v.intr.1. To make or undergo a shift or an exchange: The office has switched to shorter summer hours.2. To swish sharply from side to side.Phrasal Verb: switch off Informal To stop paying attention; lose interest.

[Probably of Low German or Flemish origin.]

switch′a·ble adj.switch′er n.

switch

(swɪtʃ) n1. (Electrical Engineering) a mechanical, electrical, electronic, or optical device for opening or closing a circuit or for diverting energy from one part of a circuit to another2. a swift and usually sudden shift or change3. an exchange or swap4. a flexible rod or twig, used esp for punishment5. the sharp movement or blow of such an instrument6. (Hairdressing & Grooming) a tress of false hair used to give added length or bulk to a woman's own hairstyle7. (Zoology) the tassel-like tip of the tail of cattle and certain other animals8. (Card Games) any of various card games in which the suit is changed during play9. (Railways) US and Canadian a railway siding10. (Railways) US and Canadian a railway point11. (Telecommunications) informal Austral See switchboardvb12. to shift, change, turn aside, or change the direction of (something)13. to exchange (places); replace (something by something else): the battalions switched fronts. 14. (Railways) chiefly US and Canadian to transfer (rolling stock) from one railway track to another15. (Electrical Engineering) (tr) to cause (an electric current) to start or stop flowing or to change its path by operating a switch16. to swing or cause to swing, esp back and forth17. (tr) to lash or whip with or as if with a switch[C16: perhaps from Middle Dutch swijch branch, twig] ˈswitcher n ˈswitchˌlike adj

switch

(swɪtʃ)

n. 1. a turning, shifting, or changing. 2. a device for turning on or off or directing an electric current or for making or breaking a circuit. 3. a track structure for diverting moving trains or rolling stock from one track to another. 4. a slender, flexible shoot, rod, etc., used esp. in whipping or disciplining. 5. the act of whipping or beating with or as if with such an object; a stroke, lash, or whisking movement. 6. a bunch or tress of long hair or some substitute, worn by women to supplement their own hair. 7. a tuft of hair at the end of the tail of some animals. v.t. 8. to change or exchange. 9. to turn, shift, or divert: to switch the subject. 10. to connect, disconnect, or redirect (an electric circuit or the device it serves) by operating a switch (often fol. by off or on). 11. to whip or beat with a switch or the like. 12. to move, swing, or whisk (a cane, a fishing line, etc.) with a swift, lashing stroke. 13. a. to move or transfer (a train, car, etc.) from one set of tracks to another. b. to drop or add (cars) or to make up (a train). v.i. 14. to strike with or as if with a switch. 15. to change, as direction or course; turn or shift: to switch to another road. 16. to exchange or replace something with another. 17. to move back and forth briskly, as a cat's tail. 18. to be shifted, turned, etc., by means of a switch. [1585–95; orig. uncertain] switch′a•ble, adj. switch′er, n.

switch

Past participle: switched
Gerund: switching

Imperative
switch
switch

Present
I switch
you switch
he/she/it switches
we switch
you switch
they switch

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

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

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

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

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

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

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

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

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

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

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

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

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

Thesaurus

Noun	1.	switch - control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuitelectric switch, electrical switchcommutator - switch for reversing the direction of an electric currentcontroller, control - a mechanism that controls the operation of a machine; "the speed controller on his turntable was not working properly"; "I turned the controls over to her"cutout - a switch that interrupts an electric circuit in the event of an overloadignition switch - switch that operates a solenoid that closes a circuit to operate the starterpush button, button, push - an electrical switch operated by pressing; "the elevator was operated by push buttons"; "the push beside the bed operated a buzzer at the desk"selector switch, selector - a switch that is used to select among alternativesthree-point switch, three-way switch - an electric switch that has three terminals; used to control a circuit from two different locationstime-switch - a switch set to operate at a desired timeon/off switch, on-off switch, toggle switch, toggle - a hinged switch that can assume either of two positions
	2.	switch - an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"permutation, substitution, transposition, replacementvariation, fluctuation - an instance of change; the rate or magnitude of change
	3.	switch - hairpiece consisting of a tress of false hair; used by women to give shape to a coiffurefalse hair, hairpiece, postiche - a covering or bunch of human or artificial hair used for disguise or adornment
	4.	switch - railroad track having two movable rails and necessary connections; used to turn a train from one track to another or to store rolling stockrailroad track, railway, railroad - a line of track providing a runway for wheels; "he walked along the railroad track"
	5.	switch - a flexible implement used as an instrument of punishmentbirch rod, birch - a switch consisting of a twig or a bundle of twigs from a birch tree; used to hit people as punishment; "my father never spared the birch"cane - a stiff switch used to hit students as punishmentferule - a switch (a stick or cane or flat paddle) used to punish childreninstrument of punishment - an instrument designed and used to punish a condemned personratan, rattan - a switch made from the stems of the rattan palms
	6.	switch - a basketball maneuver; two defensive players shift assignments so that each guards the player usually guarded by the otherbasketball play - a play executed by a basketball team
	7.	switch - the act of changing one thing or position for another; "his switch on abortion cost him the election"switching, shiftchange - the action of changing something; "the change of government had no impact on the economy"; "his change on abortion cost him the election"switcheroo - a sudden unexpected switch
Verb	1.	switch - change over, change around, as to a new order or sequenceswitch over, exchangechange by reversal, reverse, turn - change to the contrary; "The trend was reversed"; "the tides turned against him"; "public opinion turned when it was revealed that the president had an affair with a White House intern"
	2.	switch - exchange or give (something) in exchange forswap, swop, tradeexchange, interchange, change - give to, and receive from, one another; "Would you change places with me?"; "We have been exchanging letters for a year"
	3.	switch - lay aside, abandon, or leave for another; "switch to a different brand of beer"; "She switched psychiatrists"; "The car changed lanes"change, shiftexchange, convert, commute, change - exchange or replace with another, usually of the same kind or category; "Could you convert my dollars into pounds?"; "He changed his name"; "convert centimeters into inches"; "convert holdings into shares"change - change clothes; put on different clothes; "Change before you go to the opera"transition - make or undergo a transition (from one state or system to another); "The airline transitioned to more fuel-efficient jets"; "The adagio transitioned into an allegro"shift - change gears; "you have to shift when you go down a steep hill"break - change suddenly from one tone quality or register to another; "Her voice broke to a whisper when she started to talk about her children"channel-surf, surf - switch channels, on televisionleap, jump - pass abruptly from one state or topic to another; "leap into fame"; "jump to a conclusion"; "jump from one thing to another"diphthongise, diphthongize - change from a simple vowel to a diphthong; "This vowel diphthongized in Germanic"cut - make an abrupt change of image or sound; "cut from one scene to another"break - change directions suddenly
	4.	switch - make a shift in or exchange of; "First Joe led; then we switched"change over, shiftalter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"back - shift to a counterclockwise direction; "the wind backed"veer - shift to a clockwise direction; "the wind veered"
	5.	switch - cause to go on or to be engaged or set in operation; "switch on the light"; "throw the lever"flip, throwswitch on, turn on - cause to operate by flipping a switch; "switch on the light"; "turn on the stereo"switch off, turn off, turn out, cut - cause to stop operating by disengaging a switch; "Turn off the stereo, please"; "cut the engine"; "turn out the lights"mesh, lock, operate, engage - keep engaged; "engaged the gears"
	6.	switch - flog with or as if with a flexible rodflog, lash, lather, trounce, welt, whip, slash, strap - beat severely with a whip or rod; "The teacher often flogged the students"; "The children were severely trounced"
	7.	switch - reverse (a direction, attitude, or course of action)flip-flop, interchange, alternate, tack, flipchange by reversal, reverse, turn - change to the contrary; "The trend was reversed"; "the tides turned against him"; "public opinion turned when it was revealed that the president had an affair with a White House intern"

switch

noun1. control, button, lever, on/off device a light switch2. change, shift, transition, conversion, reversal, alteration, about-turn, change of direction New technology made the switch to oil possible.verb1. change, shift, convert, divert, deviate, change course I'm switching to a new gas supplier.2. exchange, trade, swap, replace, substitute, rearrange, interchange The ballot boxes have been switched. turn onswitch something off turn off, shut off, deactivate, cut She switched off the coffee-machine.switch something on turn on, put on, set off, activate, initiate, get going, set in motion, trigger off, initialize He pointed the light at his feet and tried to switch it on.

switch

nounThe act of exchanging or substituting:change, commutation, exchange, interchange, shift, substitution, trade, transposition.Informal: swap.verb1. To move to and fro vigorously and usually repeatedly:wag, waggle, wave.2. To leave or discard for another:change, shift.3. To give up in return for something else:change, commute, exchange, interchange, shift, substitute, trade.Informal: swap.

Translations

开关改变枝条转变转换

switch

(switʃ) noun1. a small lever, handle or other device eg for putting or turning an electric current on or off. The switch is down when the power is on and up when it's off; He couldn't find the light-switch.开关2. an act of turning or changing. After several switches of direction they found themselves on the right road. 转换，改变（方向、话题等） 3. a thin stick. 枝条 verb to change, turn. He switched the lever to the `off' position; Let's switch over to another programme; Having considered that problem, they switched their attention to other matters. 转换，改变（方向、思想、节目等） ˈswitchback noun a railway eg in an amusement park, or a road that has many ups and downs (and sudden turns). Let's go along the switchback. 之字形路线，高低起伏且有急转弯的道路 ˈswitchboard noun a board with many switches for controlling electric currents etc, or for making connections by telephone, eg within a large office etc. 配电盘switch on/off to put or turn on/off (an electric current / light etc). He switched on the light; Switch off the electricity before going on holiday. 开／关

switch

→ 开关zhCN, 转变zhCN

May I turn on the light? (US)
Can I switch the light on? (UK) → 我可以开灯吗？
May I turn off the light? (US)
Can I switch the light off? (UK) → 我可以关灯吗？
May I turn off the radio? (US)
Can I switch the radio off? (UK) → 我可以关收音机吗？
Can I switch rooms? → 我能换房间吗？
How do you turn it on? (US)
How do you switch it on? (UK) → 电视机怎么开？

switch

switch,

electrical device having two states: on, or closed; and off, or open. Ideally a switch offers a zero impedanceimpedance,
in electricity, measure in ohms of the degree to which an electric circuit resists the flow of electric current when a voltage is impressed across its terminals.
..... Click the link for more information. to a current when it is closed, and it offers infinite impedance when open. Mechanical switches, which operate by moving contacts together and apart, are often classified by the number of connections they can make or break at once and the number of closed positions in which they can be placed. A single-pole double-throw switch can be placed in either of two closed positions, making one connection in each position. A double-pole single-throw switch can open or close two connections at once. For many operations, as in computers and digital telecommunications, the operation of mechanical switches is too slow and transistorstransistor,
three-terminal, solid-state electronic device used for amplification and switching. It is the solid-state analog to the triode electron tube; the transistor has replaced the electron tube for virtually all common applications.
..... Click the link for more information. are used instead. The PIN diodediode
, two-terminal electronic device that permits current flow predominantly in only one direction. Most diodes are semiconductor devices; diode electron tubes are now used only for a few specialized applications.
..... Click the link for more information. , which contains an intermediate intrinsic layer between the n-type and p-type layers, is also used as a simple switch. This device, which normally acts as a conductor, acts as a strong dielectric when the intrinsic layer is reverse biased. See relayrelay,
electromechanical switch operated by a flow of electricity in one circuit and controlling the flow of electricity in another circuit. A relay consists basically of an electromagnet with a soft iron bar, called an armature, held close to it.
..... Click the link for more information. .

Bibliography

See J. C. McDonald, Fundamentals of Digital Switching (1990).

Switch

In electrical work, a device for closing, opening, or changing the connections of the circuit in which it is placed.

Switch

a device that selects the required output circuit (or circuits) and connects to it an input circuit (or circuits) by means of connection, disconnection, or commutation. The selection may be manual or automatic, following a program stated in terms of a time or state function of other electric circuits. Switches are a component of more complex data-transmission equipment used in telemechanics and communications engineering, and they are used to solve programming and control problems in computer technology and to connect circuits in electric machines.

A distinction is made among electromechanical, electronic, and electron-beam switches. The simplest electromechanical switches are knife switches, commutators of electric machines, and sets of electromagnetic relays or electromechanical selectors. More complex switches are electronic devices assembled according to definite functional schemes; they may include ionic devices, electron tubes, semiconductor devices, and electron-tube commutators, as well as gas-discharge tubes and circulators (for ultrahigh frequencies).

switch

[swich] (computer science) A hardware or programmed device for indicating that one of several alternative states or conditions have been chosen, or to interchange or exchange two data items. A symbol used to indicate a branch point, or a set of instructions to condition a branch. (civil engineering) A device for enabling a railway car to pass from one track to another. The junction of two tracks. (electricity) A manual or mechanically actuated device for making, breaking, or changing the connections in an electric circuit. Also known as electric switch. Symbolized SW.

switch

A device used to open or close an electric circuit or to change the connection of a circuit.

switch

1. a mechanical, electrical, electronic, or optical device for opening or closing a circuit or for diverting energy from one part of a circuit to another 2. the tassel-like tip of the tail of cattle and certain other animals 3. any of various card games in which the suit is changed during play 4. US and Canadian a railway siding 5. US and Canadian a railway point

switch

(programming)switch statement.

switch

(software)command line option.

switch

(networking)packet switch, circuit switch.

switch

(1) In programming, a bit or byte used to keep track of some event. The term is sometimes synonymous with the branch command.

(2) In programming, a statement that saves the programmer from having to write multiple compare statements. See event loop.

(3) A modifier of a command. For example, in the Windows/DOS command dir /p the /p is a switch that modifies the Dir command to pause after each screenful. See Dir.

(4) (SWITCH) A line of LED light bulbs from SWITCH Lighting (www.switchlightingco.com). See LED lighting.

(5) A mechanism that allows each key to be depressed on a keyboard. See mechanical keyboard.

(6) A mechanical or electronic device that directs the flow of electrical or optical signals from one side to the other. Switches with more than two ports, such as a LAN switch or PBX, are able to route traffic. See LAN switch, softswitch, PBX, data switch and transistor.

With regard to a simple on/off switch, remember... Open is "off." Closed is "on."

Mechanical and Semiconductor Switches

The semiconductor switch (transistor) performs the same function as a light switch on the wall. Instead of being manually closed, the switch is electronically closed by pulsing the semiconductor material, which makes it conduct.

A Manual Switch

This early switch panel from New York Electric Switchboard Company was used to manually open and close electric lines.

switch

switch

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switch (around) (with someone or something)

switch

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switch,

Bibliography

Switch

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foot switch

gene switch

latch switch

lever switch

mercury switch

momentary switch

plate switch

pneumatic switch

pole-changing switch

rocker switch

Patient discussion about switch

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Switch

switch

SWITCH

switch

Synonyms for switch

noun control

Synonyms

noun change

Synonyms

verb change

Synonyms

verb exchange

Synonyms

phrase switch something off

Synonyms

phrase switch something on

Synonyms

Synonyms for switch

noun the act of exchanging or substituting

Synonyms

verb to move to and fro vigorously and usually repeatedly

Synonyms

verb to leave or discard for another

Synonyms

verb to give up in return for something else

Synonyms

Synonyms for switch

noun control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit

Synonyms

Related Words

noun an event in which one thing is substituted for another

Synonyms

Related Words

noun hairpiece consisting of a tress of false hair

Related Words

noun railroad track having two movable rails and necessary connections

Related Words

noun a flexible implement used as an instrument of punishment

Related Words

noun a basketball maneuver