China National Standards

China Measurement helium porosity GB Standards List

  •  China "Measurement helium porosity" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 34533-2017 Measurement of helium porosity and pulse decay permeability of shale
    页岩氦气法孔隙度和脉冲衰减法渗透率的测定    		 China National Standards
    Measurement helium porosity
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