contact strain meter

例句：

1. 1. The contact strain meter is used to measure the strain in the material during deformation.
   接触应力计用于测量材料在变形过程中的应变。
2. 2. The engineer used the contact strain meter to monitor the stress levels in the construction site.
   工程师使用接触应力计监测施工现场的应力水平。
3. 3.The contact strain meter was essential for detecting any potential cracks in the concrete before they became visible.
   接触应力计对于在混凝土出现可见裂缝之前检测潜在裂缝至关重要。