roughness value

例句：

1. 1. The engineer measured the surface roughness of the machine to ensure it was within specifications.
   工程师测量了机器的表面粗糙度，以确保它符合规格。
2. 2.The new material has a much lower roughness value than the old one, making it easier to clean and maintain.
   这种新材料的粗糙度值比旧材料低得多，这使得清洁和维护变得更加容易。
3. 3. The manufacturer claims that their product has a lower roughness value compared to its competitors, which could be dueto the use of advanced manufacturing techniques.
   制造商声称，他们的产品与竞争对手相比具有较低的粗糙度值，这可能归因于采用先进的制造技术。