underground circuit的意思|示意

An initial investigation indicates the fire was caused by a short circuit in underground cables.

据初步调查，事故系矿井下电缆短路引发火灾。

In view of the problem that the interlocked circuit-breaker of underground local fan is influenced by the distance, the paper puts forward three kinds of design thought.

针对煤矿井下局部通风机风电闭锁装置受距离影响的问题，提出三种设计思路。

As he rises in the underground circuit, he lands in the middle of a match between his boss and a crooked cop.

当他在地下圈内蒸蒸日上时，他处在了老板和一个不正派警察之间的竞赛中。