扩音机

Hearing aids, frequently used by the old, contain loudspeakers in them.

老年人常用的助听器里就有扩音机。

Ten minutes later Sutherland grabbed a microphone.

十分钟后，萨瑟兰抓住扩音机话筒。

Admission at the transistor, amplifiers, the widespread adoption of push - pull power amplifier circuit.

在晶体管收 、 扩音机中， 广泛采用推挽功率放大电路。

OCL stereo amplifiers for the vast number of electronic assembly enthusiasts and audio enthusiasts use.

本ocl立体声扩音机适合广大电子爱好者和音响发烧友装配使用。

We haven´t any amplifiers in stock just at present; but they should come in any moment.

目前，扩音机我们正好缺货， 不过随时可能有货供应。