1、[通信]通话管
... 通话费自动计算制 automatic message accounting system 通话管 voice pipe 通话计次器 call meter ...
2、传声管
... 传热性,传热度 thermal conductivity 传声管 voice pipe (or tube) 传声器,麦克风 speaking trumpet (or megaphone) ...
3、传话管
... vitalization 鼓舞；激发 vitrodetrinite 镜质碎屑体 voice pipe 传话管 ...
4、传话筒传声筒
... 电动传声筒 bulhorn 传话筒传声筒 voice pipe ; speaking tube 传声筒,话筒 microphone ...