单词	自然磨损
释义	自然磨损医ordinary wear and tear
随便看	period of angiosperms period of anti-japanese period of Anti-Japanese war period of Anti-Japanese War period of anti-japan war period of an underdamped instru-ment period of apparent manifestation period of apprenticeship period of a repeating decimal period of associated faulting period of a state period of attendance at school period of availability period of a variable star period of a wave period of barter economy period of batching cycle period of beat period of beginning mining period of benefit period of biogas generation period of demographic transition period of depreciation period of design period of bloom