?双向微音器

... bidirectional flow 双向流 bidirectional microphone 双向微音器 bidirectional one-shot 双向单稳电路 ...

[电子]?双向传声器

... 双向交通 two-way traffic 双向传声器 bidirectional microphone 双向传感器 bilateral transducer ...

?双向麦克风

双向麦克风 bidirectional microphone 双向麦克风 bidirectional microphone 双线电磁示波器 bifilar electromagnetic oscillograph ..