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单词 transponder
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transponder

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transponder

(trænspɑndər)
Word forms: transponders
countable noun
A transponder is a type of radio transmitter that transmits signals automatically when it receivesparticular signals.
In Singapore, every car is fitted with a digital transponder that triggers automatictollbooths as it passes.

transponder in British English

or transpondor (trænˈspɒndə)
noun
1. 
a type of radio or radar transmitter-receiver that transmits signals automatically when it receives predetermined signals
2. 
the receiver and transmitter in a communications or broadcast satellite, relaying received signals back to earth
Word origin
C20: from transmitter + responder

transponder in American English

(trænˈspɑndər)
noun
a radio or radar transceiver that automatically transmits electrical signals when actuated by a specific signal from an interrogator
Word origin
transmitter + responder

Examples of 'transponder' in a sentence
transponder

He had been an operative for Behavioural Dynamics SA until he blew a transponder.
Aldiss, Brian SOMEWHERE EAST OF LIFE (1993)
A distant EC-121 Warning Star tracked -193 by means of a coded radar transponder located atop the drone's vertical fin.
Clancy, Tom WITHOUT REMORSE (1993)
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更新时间：2024/12/22 18:29:22