机舱传令钟 engine telegraph ; ship's telegraph ; engine-room annunciator ; engine-room telegraph

对机舱传令钟 motor order telegraph ; engine-room telegraph ; engine telegraph

机舱传令记录簿 ship's bell book ; engineer's bell book

主机传令记录器 engine telegraph logger

主机传令复示器 engine telegraph repeater

机仓传令钟 engineroom annunciator

机舱传令钟指令 engine room order

车钟机舱传令钟 engine telegraph

主机传令钟记录器 engine telegraph logger

机舱传令钟接收器 engine telegraph receiver