public address system造句

1、Some problems of the power transmission circuit in the public address system are discussed.
探讨了定压式公共广播系统传输线路的一些问题。

2、They tried to adapt the public address system into a radio transmitter.
他们想法把广播设备改装成无线电发报机。

3、In this paper, the loudspeaker array in the public address system is described.
叙述扩声系统用的扬声器组阵。

4、They tried to adapt the public address system into a radio transmitter
他们想法把广播设备改装成无线电发报机。

public address system翻译