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Active standard | Published: 23/05/2023
GB/T 42638-2023
The direct measuring method of the coal seam gas drainage radius in coal mine—Method of drainage volume
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 406.80 USD
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Detail information
Designation: GB/T 42638-2023
Publication date: 23/05/2023
Pages: 0
Country: Chinese technical standard
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