字詞詮 On Language: transponder

2018年7月29日星期日

transponder

Each Tour rider's bike must have two transponders — one on the fork and one on the chainstay — so the race organizers can track each rider's exact time, to the hundredths of a second.

Each Tour rider's bike must have two transponders — one on the fork and one on the chainstay — so the race organizers can track each rider's exact time, to the hundredths of a second.

transponder

NOUN

A device for receiving a radio signal and automatically transmitting a different signal.

Origin

1940s: blend of transmit and respond, + -er.

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