channel busy tone信道: channel; route; chain忙音: busy tone忙音: busy tone (电话)◇忙音插孔 busy-back jack通道忙碌: channel busy群忙音: group busy tone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:信道忙音，即可在微信中查询翻译
