armature tester

例句：

1. 1.This armature tester is used to check the performance of motors.
   这个电枢试验器用于检查电动机的性能。
2. 2. The engineer carefully assembled the armature tester before starting the experiment.
   工程师在开始实验之前仔细组装了电枢试验器。
3. 3.The armature tester was essential in identifying any defects in the electrical system.
   电枢试验器在识别电气系统任何缺陷中至关重要。