low tension arc

例句：

1. 1. The low tension arc in the circuit is causing a problem.
   电路中的低张力弧造成了一个问题。
2. 2. The engineer used a low tension arc to weld the metal together.
   工程师使用低张力弧将金属焊接在一起。
3. 3. The low tension arc was responsible for the spark that caused the fire.
   低张力弧是导致火灾的火花的原因。