即使氢气是由天然气生产出来的，汽车的碳排放量也比汽油混合型汽车低很多。
Even if the hydrogen is produced using natural gas, the emissions of the car are many times lower than those of a petrol-hybrid model.
利用气隙比磁导法建立了混合式步进电动机的磁网络模型，推导出谐波反电势的表达式。
The magnetic network model of hybrid step motor is established according to the air gap late permeance method, and the expression of the harmonic back EMF is deduced.
混合气的压缩量，由发动机的压缩比决定。
The amount that the mixture is compressed is determined by the compression ratio of the engine.
公车比火车排放的碳更多，但通过使用混合燃料车或压缩天然气引擎可以减少至最低。
Buses emit more carbon than trains, but that can be minimized by using hybrid or compressed-natural-gas engines.
指出调整点火提前角、提高压缩比以及适当预热混合气等，可以提高掺烧甲醇时燃油的经济性。
It is shown that with adjusted ignition Angle of advance, larger compression ratio and appropriate preheating of the mixture, better fuel economy can be achieved.
上海别克轿车装配了带加热器的二氧化锆氧传感器，用以检测混合气空燃比。
The zirconium dioxide oxygen sensor with heater is equipped on shanghai BUICK to check the air-fuel ratio of the mixture.
研究试验结果表明，分层扫气可减少换气过程的燃料损失，使燃油消耗率大幅度下降；使混合气空燃比的范围加大。
The result shows that stratified scavenging reduces fuel loss during air exchange greatly lowing the fuel consumption rate and enlarging the air-fuel ratio range.
试验结果表明：LPG发动机成功起动所需的混合气浓度比汽油发动机的稀。
The results showed that the fuel-air mixture suitable for the LPG engine start is leaner than that of the gasoline engine.
利用气隙比磁导法建立了混合式步进电动机的磁网络模型，推导出谐波反电动势的表达式。
In this paper, the magnetic network model of hybrid step motor is established according to the air gap rate permeance method, and the expression of the harmonic back EMF is deduced.
分析可知，减少旋流器能耗的有效方法是降低旋数，或者减少混合介质中的气液比。
The analyzes show that the effective method of reducing energy consumption was reducing swirl number or reducing the ratio of gas to liquid in mixed mediums.
同时还研究了天然气发动机的最大功率与天然气空燃比的关系等，所有这些结论都作为优化设计混合器的重要依据。
This article researched the relationship of the highest power of and the mixture density of NG and air meantime. These conclusions have been made as an important basis to design mixers optimally.
利用该燃烧模型进一步研究柴油机的燃烧和碳烟生成中的一些问题：如点火延迟时间与混合气浓度的关系，排气中的碳烟浓度与混合气油气当量比的关系。
Using a combustion model some problems such as: the relationship between ignition delay and fuel concentration, the relationship between soot concentration and the equivalent ratio of mixt...
利用该燃烧模型进一步研究柴油机的燃烧和碳烟生成中的一些问题：如点火延迟时间与混合气浓度的关系，排气中的碳烟浓度与混合气油气当量比的关系。
Using a combustion model some problems such as: the relationship between ignition delay and fuel concentration, the relationship between soot concentration and the equivalent ratio of mixt...
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