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Methods for determining the physical and mechanical properties of coal and rock—Part 12:Methods for determining coal hardiness coefficient
中国煤炭工业协会
GB/T 23561的本部分规定了捣碎法测定煤的坚固性系数所涉及的术语和定义、仪器设备、试件规格、测定步骤和数据计算。
本部分适用于褐煤、烟煤、无烟煤的坚固性系数测定,不适用于天然焦和焦炭。
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