大倾角地层煤层气钻井
CBM well boring in strata at great inclination
高炉煤气利用的研究
Research in utilization of blast furnace gas
含吸附煤层气煤
adsorbed methane-coal system
焦炉煤气利用途径分析
Analysis on the utilization of coke oven gas
煤气回收
gas recovery
gas reclamation
gas collection
coal gas recover
gas recycle
gas recycling
coal gas recollection
recovery of gas
ultimate value of recovery
煤气回收效率
gas recovering efficiency
煤气利用率
the ratio of gas utilization
油气、煤层气还原作用
reduction by oil-gas and coalbed gas