abrasion

noun

1. the wearing down of rock particles by friction due to water or wind or ice

Synonym: grindingattritiondetrition

2. erosion by friction

Synonym: attritioncorrasiondetrition

3. an abraded area where the skin is torn or worn off

Synonym: scratchscrapeexcoriation

1. （皮肤的）擦伤（处）
An abrasion is an area on a person's body where the skin has been scraped.

e.g. He had severe abrasions to his right cheek.
他的右脸颊有严重的擦伤。

1. 磨耗：这种铝油漆在使用时,接近薄膜表面的大部份的颜铝颜料的制造,是用一连串的捣碎机 (stamp mill)或鎚碎机 (hammer mill),块或颗粒,打碎成光亮,细小的叶片,便有最少程度的磨耗(abrasion)和研氛防制铝粉的可能爆炸.

2.

2. 擦伤：矿物质可通过擦伤(Abrasion)或直接作用(如铜)破坏维生素(所幸的是,除食盐以外,绝大多数矿物质含水量很低). 有些维生素可被光破坏. 核黄素在加工过程中比较稳定;但容易被紫外和可见光破坏. 维生素B6、维生素C和叶酸也可被光破坏.