GB/T 23561.12-2024 Chinese PDF (GB/T23561.12-2024) GB/T 28511.2-2023 English versions: GB/T 45562-2025

Name: GB/T 23561.12-2024 Chinese PDF (GB/T23561.12-2024) GB/T 28511.2-2023 English versions: GB/T 45562-2025
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English versions: GB/T 45562-2025

English versions: GB 44016-2024

English versions: GB/T 44937

English versions: GB/T 31239-2023

opinion and social research

GB/T 23561.12-2024 Chinese PDF (GB/T23561.12-2024) GB/T 28511.2-2023 English versions: GB/T 45562-2025GB T 23561. 12 2024_Chinese: Methods for determining the physical and mechanical properties of coal and rock Part 12: Method for the determination coal hardiness coefficients (Chinese: 12 : ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23561. 12 2024

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