大气中的甲烷有多种来源，包括化石燃料燃烧和农牧业活动，比如奶牛在进食后就会排放这种气体∶-。
It comes from a variety of sources, including fossil fuel production and even farming. Cows give off methane, ya know, after they eat.
环境中的钒有多种不同来源，人类活动，尤其是大量化石燃料的燃烧，使环境中钒含量急剧增加。
There are many sources of vanadium in environment. Human activities, especially combustion of fossil fuel, make the quantity of vanadium in environment increase intensively.
燃烧的燃料有固体、液体、气体多种。
对高速轻型车用柴油机燃用乙醇柴油燃料的放热率和燃烧特性进行了研究，并对多种比例乙醇柴油的排放特性进行了考察。
The experimental study on the diesel engine fueled with ethanol diesel-oil was carried on with the use of multiple-hole nozzle and conical nozzle respectively.
另外，由于矿物燃料的燃烧，人类向大气中排放了大量的二氧化碳(CO2)等多种温室气体，使得全球气候日益变暖。
In addition, a lot of CO2 and other greenhouse gases were released into the atmosphere since the burning of fossil, which is leading to the growing global climate warming.
本锅炉能同时投运多种燃料，也可以用其中一种燃料单独燃烧支撑锅炉正常工作。
The boiler can be used for simultaneously putting various fuels into operations, and one of the fuels can be singly burnt to support the normal work of the boiler.
本锅炉能同时投运多种燃料，也可以用其中一种燃料单独燃烧支撑锅炉正常工作。
The boiler can be used for simultaneously putting various fuels into operations, and one of the fuels can be singly burnt to support the normal work of the boiler.
应用推荐