GB/T 23561.11-2024 Chinese PDF (GB/T23561.11-2024)GB T 23561. 11 2024_Chinese: Methods for determining the physical and mechanical properties of coal and rock Part 11: Methods for determining shear strength of coal and rock (Chinese: 11) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23561. 11 2024
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GB/T 23561.11-2024 Chinese PDF (GB/T23561.11-2024)