regulator tester

例句：

1. 1.The regulator tester is used to adjust the flow of gas in the engine.
   调节器测试器用于调整发动机中气体的流动。
2. 2.The engineer used the regulator tester to check the pressure in the pipeline.
   工程师使用调节器测试器检查管道中的压力。
3. 3.The regulator tester was essential for ensuring the safety of the chemical plant.
   调节器测试器对于确保化工厂的安全至关重要。