buzzers electric 中文意思是什麼
buzzers electric
解釋
電蜂音器-
Shipbuilding - electric buzzers
造船.電蜂鳴器 -
Control devices micro switches, limit switches, buzzers, timers, thermal relays, photo electric switches, proximity switches, etc
微型開關制、限制開關制、蜂鳴器、定時器、熱力電驛、光電開關制、近距離開關制等
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