spark plug gauge

例句：

1. 1.The technician uses a spark plug gauge to check the performance of the engine.
   技术员使用火花塞测试仪来检查发动机的性能。
2. 2.During maintenance, the mechanic checks the spark plug gauge to ensure it's functioning properly.
   在维护期间，机械师检查火花塞测试仪以确保其正常工作。
3. 3. The engineer used a spark plug gauge to diagnose the issue with the fuel system.
   工程师使用火花塞测试仪诊断燃料系统的问题。