surface marking
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它的铜支架把厚厚的地毯表面压出了印痕。
Its brass feet dented the carpet's thick pile.
《柯林斯英汉双解大词典》
在小颗粒松散磨料的低磨损区，磨损机理主要是微观切削磨损机理，表面有明显的犁沟或者印痕。
In the low wearing area of the loose abrasive of tiny particle, wear mechanism is mainly the micro-cuts wearing mechanism, and the surface has obvious furrow and indentation.
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