specific surface tester of sand

例句：

1. 1.The specific surface tester was used to measure the surface roughness of the material.
   特定表面试验器用于测量材料的表观粗糙度。
2. 2. The engineer used the specific surface tester to check the quality of the concrete.
   工程师使用特定表面试验器检查混凝土的质量。
3. 3. The specific surface tester was used to analyze the chemical composition of the soil.
   特定表面试验器被用来分析土壤的化学成分。