arc-initiating device

例句：

1. 1. The arc-initiating device was designed to detect and prevent accidents at the construction site.
   弧启动装置被设计用来检测和预防工地上的事故。
2. 2. The engineer used an arc-initiating device to cut through the concrete without damaging it.
   工程师使用了一个弧启动装置来切割混凝土，而没有损坏它。
3. 3. The arc-initiating device is essential for ensuring safe operation of heavy machinery.
   弧启动装置对于确保重型机械的安全运行至关重要。