名词
中文翻译：凹面滚筒
同义词：
['concave', 'concave surface例句：1. The concave roll is used to smooth the surface of the material being processed.（凹面滚筒用于加工材料的平滑表面。）']
例句：
-
1. The concave roll is used to smooth the surface of the material being processed.
凹面滚筒用于加工材料的平滑表面。
-
2. The concave roll is an essential tool for metalworking.
凹面滚筒是金属加工中不可或缺的工具。
-
3.The concave roll is used to create a curved surface on the material being processed.
凹面滚筒用于在加工材料上形成曲线表面。