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See also:ABRASION (from See also:Lat. ab, off, and radere, to scrape) , the See also:process of rubbing off or wearing down, as of See also:rock by moving See also:ice, or of coins by See also:wear and See also:tear; also used of the results of such a process as an See also:abrasion or excoriation of the skin . In machinery, abrasion between moving surfaces has to be prevented as much as possible by the use of suitable materials, See also:good fitting and See also:lubrication . See also:Engineers and other craftsmen make extensive use of abrasion, effected by the aid of such abrasives as See also:emery and See also:carborundum, in shaping, See also:finishing and polishing their See also:work . |
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