电声的英文：
electro acooustic ;electroacooustic

electronic)musical instrument;Electrophonic(或electro acoustic;electrophone
电声乐器

Electroacoustic transducing mechanism
电声换能机构

Electro-shock treatment(used esp on psychiatric patients)
电休克疗法(尤用于精神病患者).

Curved plates: Electros or stereos shaped for use on rotary printing machines.
弧形板:轮转机手的电铸版或铅铸版。

It may be an environment-simulation device such as a centrifuge or electro-mechanical vibrator
可能是一种环境模拟装置，如离心机或机电式振动台。