平均缺陷数

classification of defects detection of defects have the defects of one's qualities scope of general average condition of average article of average quality average of daily figures commodity of average composition average length of life norm of progressive average average length of trip average date of input tolerance number of defects number of defects average number of travels average number of job number average degree of polymerization average number of days to turnover average number of lambs per birth average number of workers and staff average number of delivered young livestock average number spectrum of defects