fault trace

例句：

1. 1. The fault trace on the circuit board indicates a problem with the wiring.
   电路板上的故障轨迹表明了电线的问题。
2. 2.The engineer used the fault trace to pinpoint the location of the failure.
   工程师使用故障轨迹来定位故障的位置。
3. 3. The technician examined the fault traces and determined the cause of the malfunction.
   技术人员检查了故障轨迹，并确定了故障的原因。