GB/T 34547-2017煤矿区煤层气地面抽采效果检测与评价国家标准
英文:Specification for detection and evaluation of coalbed methane surface drainage effect in coal mine GB/T 34547-2017介绍:...
英文:Specification for detection and evaluation of coalbed methane surface drainage effect in coal mine GB/T 34547-2017介绍:...