strain-gauge installed by spraying process

例句：

1. 1.The strain-gauge is used to measure the strain in the material.
   应变计用于测量材料中的应变。
2. 2. The engineer used a strain-gauge to detect any changes in the structure.
   工程师使用应变计来检测结构的任何变化。
3. 3. The strain-gauge was used to monitor the stress on the beam during testing.
   应变计被用来监测测试期间梁上的应力。