合理磨损

【经】 fair wear and tear

合理的英语翻译：

in reason; with reason

磨损的英语翻译：

wear and tear; abrasion; fray; fret
【计】 wear-out
【化】 abrasion and wear
【医】 abrade; abrasio; abrasion; arrosion; wear
【经】 attrition