Gas Main
气体干管
气体总管
煤气总管
气体燃料主喉
气体输送管道
输气总管
总气管
总煤气管
气罩
accumulator gas valve core
coal related gas source of natural gas hydrate
correlation of deep basin gas with Upper Paleozoic gas accumulation
deep basin gas (source-contacting gas accumulation)
deep basin gas source-contacting gas accumulation
Emergency Gas Sources Instead of Natural Gas
Gas heated reforming of natural gas
Gas hydrate and free gas
gas turbine combustion chamber with gas compressor cylinder proper