ground water gas地下水中气
ground escape gas地下逸出气
ground natural gas flare-stack海底天然气火炬竖管
ground gas drainage地面瓦斯抽放
ground gas draining system地面瓦斯抽放泵站系统
ground liquefied petroleum gas storage地下液化石油气库
bair conditioning unitk ground gas背景气
leak gas to ground漏泄至地
Gas in ground silo地面筒仓瓦斯