The principle of the "acoustic amplifier" was discussed.

讨论了“声学放大器”的原理。

youdao

This thesis is primarily concerned with acoustic amplifier.

本文的研究重点是声学放大器。

youdao

The term "efficiency" refers to the ability of a speaker system to convert electrical energy (power from the amplifier) into acoustic output.

术语“效率”是指扬声器系统将电能（功放的推力）转化为声音输出的能力。

youdao

He rummaged around in his bundle and pulled out a small, battery-operated Craig amplifier, then plugged a lead into an acoustic guitar that was broken in front and had pieces of wood rattling around inside it.

NEWYORKER: Romance