[ 第三人称单数 roughens 现在分词 roughening 过去式 roughened 过去分词 roughened ]
roughen edges 粗糙边缘 ; 粗拙边缘 ; 粗糙边沿
CE Roughen Edges 让边缘变粗糙 ; 让边沿变粗糙
machining roughen 机械加工粗化
Chemical Roughen 化学粗化
surface roughen 表面粗糙化处理
coarsen roughen 变粗糙
roughen n 变得粗糙
"roughen the surfaces so they will stick to each other"
以上来源于: WordNet
V-T If something has been roughened, its surface has become less smooth. 使···变粗糙 [usu passive]
...complexions that have been roughened by long periods in the hot sun.
...经长时间日晒变粗糙了的面容。
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