垃圾场煤气发动机简图
landfill engine schematic
发动机气动特性
engine pneumatic characteristics
气动发动机
air motor
air powered vehicle engine
air powered engine
pneumatic engine
Air-powered Engine
Air-power engine
compressed-air engine
大倾角地层煤层气钻井
CBM well boring in strata at great inclination
固定层煤气发生炉
fixed bed coal gas generator
含吸附煤层气煤
adsorbed methane-coal system