规定了通过使用水置换法直接测量通过取芯或收集块状样品获得的材料中的气体体积来测定煤和碳质材料解吸气体含量的程序。

Specifies procedures for the determination of the desorbed gas content of coal and carbonaceous material by directly measuring the volume of gas, using the water displacement method, from material obtained by coring or collection of lump samples.