In view of the problems that the fuel natural gas consumption was too high and the heat energy severely wasted in the synthetic ammonia transforming system in China,a technological modification was adopted in a synthetic ammonia plant.
针对目前国内天然气合成氨装置的转化系统普遍存在燃料天然气消耗过大、热能浪费严重等问题,对合成氨装置转化系统进行了一系列节能技术改造。
According to the results of engine bench,the paper describes the operation performance of diesel/natural gas dual fuel engines for vehicles and analyzes controlling methods for dual fuels.
该课题研究通过自行建立的柴油天然气双燃料供应系统，采用发动机台架试验方法，分析了车用柴油天然气双燃料发动机的工作特性和双燃料的控制方法，提出一种电子控制方案，并进行了可行性试验，初步试验结果令人满意。
"fossil fuels: coal, oil, and natural gas"
矿物燃料(煤、石油、天然气)
fossil fuels
(煤、石油、天然气等)矿物燃料
clean fuels such as gas, liquified petroleum gas and natural gas
煤气、液化石油气和天然气等清洁燃料
Apart from coal, the most important natural fuels are gas and oil .
除了煤以外，最重要的天然燃料是天然气和石油。
Besides coal, the most important natural fuel are gas and oil.
除了煤，最重要的天然燃料是煤气和石油。
The cause of the problem is that as we burn fossil fuels- coal, oil, and gas- we pump carbon dioxide into the atmosphere.
问题的原因是当我们燃烧矿物燃料——煤、油和天然气时，我们将二氧化碳排放到大气之中。
A major source of these compounds is the burning of fossil fuels (coal, oil, and natural gas) in industry and in transportation.
在工业和运输行业中化石燃料（煤、石油和天然气）的燃烧是这些化合物的主要来源。
A material such as wood, coal, gas, or oil burned to produce heat or power.
燃烧剂木头、煤、天然气、石油等燃烧生热并且产生能量的物质
Wood, coal, oil and gas are different knids of fuel.
木材，煤，油和天然气是不同种类的燃料。
Coal production climbed at an ever-accelerating pace. Half a century after the first oil well was drilled in 1859, oil and gas were beginning to displace coal as the fuel of choice.
在1859年第一口石油钻井出油之后的半个世纪以来，石油和天然气开始逐步取代煤而作为燃料。
The characteristics of alternate fuels, such as natural gas, liquid petroleum gas, hydrogen, dimethyl ether, alcoholic fuel, and biomass fuel, were introduced.
介绍了几种车用清洁代用燃料——天然气、化石油气、能源、甲醚、燃料及生物燃料的特点。
Other materials used as fuel include fuel oil, powdered coal, natural gas, and so on.
其他可用作燃料的材料还有柴油、煤粉、天然气等。
Agriculture, smelting, petroleum, food &beverages, tobacco, handicrafts, clothing, tin mining, natural gas, narcotics.
农业,熔炼,石油,食物&饮料,烟草,工艺品,衣物,罐子采矿,天然气,麻醉剂。
Much of our oil, gas, and minerals also come from underwater.
许多石油、天然气与矿物亦是取自海里。
Coal, oil,wood and gas are fuels.
煤炭，石油，木柴和煤气都是燃料。
Coal and oil are natural products.
煤和石油是天然物产。
Petroleum, along with fuel gas, has recently risen in price.
最近石油和燃料煤气的价格上涨了。
A colorless gas, C3H8, found in natural gas and petroleum and widely used as a fuel.
丙烷无色气体，化学式为C3H8，存在于天然气和石油中，广泛用作燃料