roughness tester

例句：

1. 1.The engineer used the roughness tester to measure the surface roughness of the machine parts.
   工程师使用粗糙度测试仪测量机器零件的表面粗糙度。
2. 2. The roughness tester was used to check the quality of the new material.
   粗糙度测试仪被用来检查新材料的质量。
3. 3. The manufacturer recommended using a roughness tester to ensure the accuracy of the measurements.
   制造商推荐使用粗糙度测试仪以确保测量的准确性。