The researchers first tried out their device on gas emissions from nicaraguan craters in 2000 研究人员于2000年首次试验这种装置,用以侦测尼加拉瓜的火山口排出的气体。
All gas vented during the snubbing / stripping operation must be flared and burned a minimum of 50m from the well 要在离井口至少50米开外点着并燃烧承压起下管柱操作过程中排出的气体。
A fart , which is the expulsion of gas from the anus , is often accompanied by a loud noise , a vibrating sensation , and an unpleasant odor 屁,是从肛门排出的气体,通常伴随一声巨响、一阵振动感,以及一股难闻的臭味。
Other contributors include methane released from landfills and agriculture ( especially from the digestive systems of grazing animals ) , nitrous oxide from fertilizers , gases used for refrigeration and industrial processes , and the loss of forests that would otherwise store co2 其它气体包括从垃圾填埋和农业而产生的甲烷(食草动物消化系统) ,从肥料中产生的氧化亚氮,用于冷藏的气体和工业排出的气体,以及那些能贮存二氧化碳消失的森林。