signaling battery

例句：

1. 1. The new car has apowerful signalling battery that can last forseveral hours.
   这款新车配备了一个强大的信号电池，可以持续使用几个小时。
2. 2. The old radiohad to be replaced with a new onebecause the signalling battery was dead.
   因为信号电池坏了，旧收音机不得不被替换。
3. 3.The engineer used a special device to testthe signalling battery of the spacecraft.
   工程师使用了一种特殊的装置来测试飞船的信号电池。