intercommunication switch内部: interior; inside; inward; in ...通话: communicate by telephone; ca ...开关: Q-switching通话开关: speech-path switching element内部通话: incom intercom下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:内部通话开关，即可在微信中查询翻译
