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Number of entries (Data is updated on a monthly basis): 82592
GB/T 26645.1-2011
Determination of particle size distribution by gravitational liquid sedimentation methods - Part 1: General principles and guidelines
GB/T 15445.5-2011
粒度分析结果的表述 第5部分:用对数正态概率分布进行粒度分析的计算方法
Representation of results of particle size analysis - Part 5: Methods of calculations relating to particle size analyses using logarithmic normal probability distribution
GB/T 25912-2010
Information technology - Tibetan coded character set 24×48 dot matrix font - Petsuk
Number of entries (Data is updated on a monthly basis): 82592