核能比天然气的污染少，但是成本太高，而且因为放射性废物处置存在的高度危险性而被美国上下置疑。
Nuclear energy is less polluting than gas from a climate-changing perspective, but it is costly and viewed skeptically in the United States because of the dangers of disposing of radioactive waste.
根据弗吉尼亚州费尔法克斯的一个废物处理咨询机构Gershman,Brickner &Bratton的数据，超过36家其他美国企业正在计划建设等离子体炬合成气工厂。
More than three dozen other American firms are proposing plasma-torch syngas plants, according to Gershman, Brickner &Bratton, a waste consultancy based in Fairfax, Virginia.
但是，现在的空气污染正受到现代交通运输业的污染，尤其是天然气汽车，以及燃烧矿物燃料的发电机，把污染的化学废物倾倒在空气中。
Butt air is now being polluted by modern transportation, notably gas-powered automobiles, as well as electrical generators that burn fossil fuels and pour polluting chemical waste into the air.
石油工程师想方设法从地下储存库中提取石油，天然气，蒸汽，热水并用储存库安全处理废物。
Petroleum engineers devise ways to identify and extract underground reservoirs of oil, natural gas, steam, and hot water, as well as using the empty reservoirs for the safe disposal of waste.
为了研究固体废物批量热解特性，在试验台上进行了批量规模的高温热解试验，得到了各样本的热解气组分和产气率。
The change of final pyrolysis temperature, characteristic of waste, rate of gas yield and the key element of gas calorific value were studied in detail.
由于沼气是一种混合的甲烷(又称沼气或天然气，甲烷)和二氧化碳知道它是一种可再生的燃料废物处理产生的。
Since biogas is a mixture of methane (also known as marsh gas or natural gas, CH4) and carbon dioxide it is a renewable fuel produced from waste treatment.
由于沼气是一种混合的甲烷(又称沼气或天然气，甲烷)和二氧化碳知道它是一种可再生的燃料废物处理产生的。
Since biogas is a mixture of methane (also known as marsh gas or natural gas, CH4) and carbon dioxide it is a renewable fuel produced from waste treatment.
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