动力描记器

例句：

1. 1. The engineer used a power tracer to detect the faulty circuit.
   工程师使用一个功率记录仪来检测出故障电路。
2. 2. The power tracer helped us locate the source of the electrical problem.
   这个功率记录仪帮助我们找到了电气问题的源头。
3. 3. During maintenance, the power tracer was used to monitor the system's performance.
   在维护期间，功率记录仪被用来监测系统的性能。