ISO/DIS 13909-7 : 50.60 (2016)被替代
HARD COAL AND COKE - MECHANICAL SAMPLING - PART 7: METHODS FOR DETERMINING THE PRECISION OF SAMPLING, SAMPLE PREPARATION AND TESTING
出版：International Organization for Standardization
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基本信息
標準編號： ISO/DIS 13909-7 : 50.60 (2016)
標準類別：Standard
出版單位：International Organization for Standardization
標準頁數：0
標準簡介
Defines methods for estimating overall precision and for deriving values for primary increment variance which can be used to modify the sampling scheme to change the precision.
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