单词	natural loss
释义	同natural loss-- ordinary wear and tear-- wear and tear
随便看	programed control program editoi program editor programed或programmed program effectiveness program element program element code program element code，pec program element--pe program element，pe program environment programer programer,programmer program error program error interrupt program error report program error report，per program evaluation program evaluation and review technic program evaluation and review technique program evaluation and review technique (pert) program evaluation and review technique (pert.) program evaluation and review technique {=pert} program evaluation and review technique--pert program evaluation and review technique，pert