electric motor short circuit test instrument

例句：

1. 1. This electricmotor short circuit test instrument is very usefulfor testing the performance of electrical devices.
   这个电动机短路测试仪器对于测试电气设备的性能非常有用。
2. 2. The engineer used this instrument toquickly diagnose the problem with the electric motor.
   工程师使用这个仪器迅速诊断了电机的问题。
3. 3.The technician carefully checked the instrument'saccuracy before performing the test.
   技术人员在执行测试之前仔细检查了仪器的准确性。