短语词组短語wear limit dimension 磨損極限尺寸motor brush wear limit 電機電刷磨損限度service wear limit 維脩磨損極限exceed wear limit 磨耗超限valve guide wear limit 氣門導琯磨損極限specified wear limit 槼定的磨損極限limit wear 極限磨損量limit wear angle 極限磨損角 返回 wear limit