signal mast
... signal man 信号手;舱口装卸指挥 signal mast 信号桅 signal mast 信号桅杆 ...
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信号桅杆 signal mast
活动式信号桅杆 portable signal mast
桅信号灯 top lantern
信号顶桅 signal topmast
桅顶信号灯 truck light
桅墙信号 Mast and signal
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广播电视信号发射设施，包括天线、馈线、塔桅（杆）、地网、卫星发射天线及其附属设备等；
The radio and television signal emission facilities, including antenna, feeder links, tower masts (poles), ground network, satellite transmitting antenna as well as the auxiliary equipments thereof;
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