paper smoothness tester withvacuum pump

例句：

1. 1. This paper smoothness tester is very useful for testing the quality of office paper.
   这款纸张平滑度测试仪对于测试办公用纸的质量非常有用。
2. 2. The company has developed a new model of paper smoothness tester with vacuum pump, which can detect the surface roughnessof paper more accurately.
   该公司已经开发了一款新型的带真空泵的纸张平滑度测试仪，能够更准确地检测纸张的表面粗糙度。
3. 3. In this experiment, we used the paper smoothness tester with vacuum pump to measure the surface roughness of different types of paper.
   在这个实验中，我们使用带真空泵的纸张平滑度测试仪来测量不同类型纸张的表面粗糙度。