They can be used in devices for which vacuum tube valves were unsuitable, such as in hearing aids designed to fit into the ear.
英
美
释义
它们能用在不宜采用真空管的装置上,例如能用在放在耳朵内的助听器里。
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载