传统的冲压喷气发动机使用液体燃料并与大气中的空气混合燃烧，以提供高速飞行的推力。
Ramjet engines have traditionally used liquid fuel which is mixed with atmospheric air and burned to provide thrust for high-speed flight.
例如，蒸汽发动机可以用煤，报纸或木头作为燃料，而内燃机需要用纯的，高质量液体燃料或气体燃料。
For example, a steam engine can use coal, newspaper or wood for the fuel, while an internal combustion engine needs pure, high-quality liquid or gaseous fuel.
第一个使用液氧碳氢推进剂的国产液体燃料火箭发动机被安装在了火箭的E段上，它可以提供5.6吨的推力。
The first native liquid-fueled rocket engine used a liquid oxygen and carbon-hydrogen propellant, provided 5.6 tons of thrust, and was installed in unit e.
内燃机是最常见的，内燃机是最常见的，其动力来自气缸里液体燃料的燃烧。发动机有汽油机和柴油机两种，的燃烧。
The internal combustion engine is most common: this obtains its power by burning a liquid fuel inside the engine cylinder.
用沼气作为发动机燃料可以节省液体燃料又可为农业提供廉价的动力和电力。
It is used in engines to save liquid fuel and provide power and electricity economically in agriculture.
为了分析发动机设计参数对反应流场的影响，用不同的条件进行计算，并由此分析了补燃室几何结构和液体燃料初始颗粒直径对燃烧效率的影响。
Calculations were carried out under different chamber configurations and initial droplet diameters, from which the effects of these conditions on the combustion efficiency were analyzed.
为了分析发动机设计参数对反应流场的影响，用不同的条件进行计算，并由此分析了补燃室几何结构和液体燃料初始颗粒直径对燃烧效率的影响。
Calculations were carried out under different chamber configurations and initial droplet diameters, from which the effects of these conditions on the combustion efficiency were analyzed.
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