GB/T 23561.4-2009

Methods for determining the physical and mechanical properties of coal and rock - Part 4: Methods for calculating the porosity of coal and rock

NORM herausgegeben am 8.4.2009

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The information about the standard:

Designation standards: GB/T 23561.4-2009
Publication date standards: 8.4.2009
Country: Chinese technical standard
Kategorie: Technische Normen GB