表面划痕 meaning in English

surface scratch

Scratches on optical component surface and its ' modulation on injecting laser
光学元件的表面划痕及其对入射激光的调制作用
Ceramic tiles ; determination of scratch hardness of surface according to mohs ; german version en 101 : 1991
陶瓷砖.按莫斯测定法测定表面划痕硬度
Plastic products clear finish of round and curved surface , deburring and removing scratch of plastic products
塑胶产品加工可抛光弧面及曲面，修边去毛刺，清除塑料产品的表面划痕等。