扬声器

Banana plug-compatible speaker terminals grace the amplifier outputs, facilitating the use of audiophile-quality speaker cables.

香蕉插头兼容的声器终端宽限期放大器输出，促进利用高保真声器电缆。

His cockpit speakers crackled. "There isn't a droid made that can outfly you, Master."

他座舱内的声器出一阵噼啪声：“没有一个机器人的飞行本领能得上您，师父。”

The loudspeakers blared the speech repeatedly.

声器里反复大声地播送那篇演讲。

The Capacitor turns the signal in antiphrasis, the only thing whole. The Earphones do such long ago. The Shot of the handgun not audible.

什么是积极保护？基本原理是：接收信号---一个放大器，一个晶体管---一个可变电阻的电容器---一个声器或极的输出装置。