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GB/T 23561.12-2010  China national standard english version:

　
GB
中华人民共和国国家标准
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 23561.12-2010

Methods for determining the physical and mechanical properties of coal and rock - Part 12: Method for determining coal hardiness coefficient
煤和岩石物理力学性质测定方法 第12部分：煤的坚固性系数测定方法
Issued Date:2010-09-26 　 Implemented Date:2011-02-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 23561.12-2010
Standard Category China National Standards
GB Standard English Title Methods for determining the physical and mechanical properties of coal and rock - Part 12: Method for determining coal hardiness coefficient
GB Standard Chinese Title 煤和岩石物理力学性质测定方法 第12部分：煤的坚固性系数测定方法
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