Another gas associated with the spread of agriculture is methane.
另一种与农业扩张有关的气体是甲烷。
At the same time, agriculture and associated deforestation are thought to produce up to 20% of global greenhouse gas emissions.
与此同时，农业和相关森林砍伐被认为产生了全球20%的温室气体排放。
Coal, by contrast, is associated with a much smaller methane release during mining; but burning it produces about twice as much CO2 as burning natural gas.
与之相反，在煤炭的开采中甲烷释放要少的多；但燃烧煤炭所产生的CO2比燃烧天然气所释放的CO2多出2倍。
But a key obstacle to reduce the amount of gas flared is the lack of infrastructure and available markets for the associated gas.
然而，减少天然气燃除的一个主要障碍是缺乏利用伴生气所需要的基础设施和现有市场。
Cities are also a major source of greenhouse gas emissions. And those on the coasts face the risk of rising sea levels associated with climate change.
城市也是温室气体排放的主要来源之一，而那些沿海的城市也在面临着气候变化所带来的海平面上升的风险。
The amount of gas used means that a barrel of Californian heavy oil gives the stuff from Canada's tar sands a run for its money in terms of associated greenhouse-gas emissions.
根据相关的温室气体排放，天然气的耗费量意味着每桶加州重油竭尽全力从加拿大沥青砂岩中提取材料。
It's normal in oil production that you have gas associated with the oil in the oil field.
在石油生产中，油田生产石油时产生天然气是很正常的。
Any effect from modern changes in solar activity is likely to be dwarfed by greenhouse gas emissions and associated issues such as sulphate aerosols.
近现代时期，和温室气体及硫酸盐气溶胶相比，太阳活动的影响更是相形见绌。
Mr. Howarth included methane losses associated with flow-back and drill-out processes in hydraulic fracturing and other unconventional gas drilling techniques.
霍沃斯先生将在水力压裂法和其它非传统天然气开采技术中返排和钻出过程中所泄露的甲烷包含在了其计算中。
Coal contains less energy per unit of weight than weight than natural gas or oil; it is difficult to transport, and it is associated with a host of environmental issues, among them acid rain.
煤的单位能量含量低于石油和天然气，而且会导致包括酸雨在内的一系列环境问题。
The study found that growing meat in the lab rather than slaughtering animals would generate only a tiny fraction of the greenhouse gas emissions associated with conventional livestock production.
研究表明，在实验室培养的肉与那些传统方式宰杀动物相比，会产生更少的温室气体。
The hazards associated with nitrogen are asphyxiation and the high pressure of the gas in containers and systems.
同氮相联系的危险是窒息和在容器和系统里的高压。
At the region near the nozzle exit, a vibrating flow phenomenon is found, which is associated with the expansion waves and shock waves reflections inside the gas jet.
发现了在接近喷嘴出口的区域里，出现了与射流内的激波、膨胀波有关的振荡流。
Astronomers figured out in the 1980s that the Pleiades cluster was moving through a cloud of gas otherwise not associated with the cluster's stars.
天文学家于1980年用数字和图形表示出昴宿星团正通过一气体云移动另外不与星团星星联系。
The project involves the exploration, development, production, marketing, and sales of natural gas, oil and associated condensate from the contract areas.
这一项目包括在合同区内对天然气、石油和凝析油进行勘探、开发、生产、市场开发和销售。
If you are unfamiliar with the hazards associated with a particular gas, contact your supplier for additional information.
如果你对与特定气体相联系的危险不熟悉，请与你的供应商联系，以得到补充资料。
Based on these, the new method that pressure build-up curve associated with pressure fall-off curve to determining the productivity of gas well is proposed.
在此基础上提出了用不稳定试井资料确定气井产能的新方法，即用压力恢复曲线法与压降曲线法相结合确定气井产能的新方法。
The hazards associated with argon are asphyxiation and the high pressure of the gas in containers and systems.
同氩相联系的危险是窒息和在容器和系统里的高压。
Iraq has struggled for years with power blackouts and risks years of electricity shortages until associated gas from oilfields is captured and fed to new power plants.
伊拉克一直在努力多年，直到从油田相关气体捕获和美联储新电厂停电和电力短缺的风险年。
Associated natural gas widely exists in brine Wells in Penglai Salt Mine, but the output differs a lot.
伴生天然气在蓬盐矿山各卤井中普遍存在，但产量差别很大。
The formation of authigenic kaolinite and secondary pores and charging of natural gas are two associated processes with closely related mechanisms.
自生高岭石与次生孔隙的形成过程与天然气的充注，为两个机理上紧密联系的共生过程。
A responsible person of oil production technology in Liaohe Oilfield said that associated gas had a high value in the internal production process.
辽河油田采油工艺处相关负责人表示，伴生气在内部生产环节具有很高的利用价值。
Secondary biogenic gas is usually associated with late stage groundwater system and bacteria activity.
次生生物成因气常与后来的煤层含水系统的细菌活动有关。
Noble gas isotopic compositions in mantle fluids are associated with their tectonic settings and magmation in deep mantle.
地幔流体中稀有气体同位素组成与其所处的大地构造背景和深部地幔岩浆活动性质有关。
The natural gas generator is recommended to use in production station in order to make use of associated gas.
为了利用油田的伴生气资源，在采油站推广应用了天然气发电机。
The gas chimney is a specially associated structure formed by the hot fluid flow in the sedimentary basin.
气烟囱是由热流体活动形成的一种特殊的伴生构造。
It will provide significant guide for oilfields, especially for those having high gas-oil ratio in western China developed by abundant associated gas or gas-injection miscible phase process.
这将为西部油田特别是高气油比油田利用丰富的伴生气、采用注气混相驱开发有一定的借鉴意义。
It will provide significant guide for oilfields, especially for those having high gas-oil ratio in western China developed by abundant associated gas or gas-injection miscible phase process.
这将为西部油田特别是高气油比油田利用丰富的伴生气、采用注气混相驱开发有一定的借鉴意义。
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