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。
"fossil fuels: coal, oil, and natural gas"
矿物燃料(煤、石油、天然气)
A gaseous fuel, such as natural gas.
气体燃料处于气态的燃料，如天然气
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。
compressed natural gas engine fuel system
压缩天然气发动机燃料系统
colorless gas found in natural gas and petroleum; used as a fuel.
一种无色气体，见于天然气中，用作燃料。
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
Development of Single Fuel-NQ190N Natural Gas Engine
NQ190N天然气单燃料发动机的开发
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。
Optimal Control of Oil-gas Switch of CNG/gasoline Dual Fuel Engine
天然气/汽油两用燃料发动机燃料切换的优化控制
Optimal Control Model for Fuel Switching in CNG/Gasoline Dual Fuel Engine
天然气/汽油两用燃料发动机燃料切换的优化模型
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。
A Life Cycle Analysis of Natural Gas Based Automotive Fuels
基于生命周期的天然气基汽车燃料的分析
Natural gas will become the preeminent fuel of the 21st century, according to widespread expectation.
许多专家预测，天然气将成为21世纪的主要燃料。
Study on Catalytic Materials of Natural Gas Catalytic Combustion Domestic Boiler;
家用天然气催化燃烧热水器催化材料的研制
Optimal Control of Oil-gas Switch of CNG/diesel Dual Fuel Engine;
天然气/柴油双燃料发动机油气切换的优化控制