同: "抓"线: thread; string; wire电话: telephone; phone; telephone ...继电器: electric relay; relay组: group电话继电器: telephone relay同线电话: multiparty telephone; party call; party line station; party line telephone; party-line telephone; subscribers group service同线电话线: party wire; single party line同线电话制: party line system; party-line system继电器组: banked relay; relay group; relay set; relay unit继电器组合: relay assembly继电器组件: relay package两户同线电话: two party telephone同线电话分机: party line telephone subset同线电话模块: party line module同线电话业务: party line service遥控继电器组: supervisory control relay座席继电器组: position relay set多用户同线电话: multiplarty两户同线电话线: two party line; two-pl两户同线电话用户: two party subscriber同线电话用户设备: reverting equipment同线电话振铃电键: party line ringing key电话式继电器: telephone type relay开关选择同线电话系统: switch selection multiparty system