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单词 θ197830
释义
society > communication > telecommunication > radio communications > radio equipment > [noun] > radio set > type of transmitter (3)
baby monitor1914

(a) = baby-minder n.; (b) (in hospitals) a device which measures the vital signs of an ill baby or child; (c) an intercom system which enables a…

jammer1947

A transmitter used for jamming.

Sarah1955

Name given to a portable radio transmitter used by wrecked airmen to signal their position to rescue ships or aircraft. Also attributive.

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