strain tester

例句：

1. 1. The strain tester wasused to measure the material's strengthunder stress.
   应变测试器被用来测量材料在应力下的性能。
2. 2. Theengineer used the strain tester to detect any defects inthe metal.
   工程师使用应变测试器来检测金属中任何缺陷。
3. 3. The straintester is essential for ensuring the structuralintegrity of buildings.
   应变测试器对于确保建筑物的结构完整性至关重要。