单词 | resonant-reed relay |
释义 | resonant-reed relay [`res·ǝn·ǝnt ¦rēd `rē´lā] ELECTRICITY A reed relay in which the reed switch closes only when the required frequency is applied to the operating coil, to make one of the reeds vibrate until its amplitude is sufficient to make contact with the other reed; used in selective paging systems. |
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