预燃

The NOx and CO〓 emissions are reduced by more than 15%. But the Total Hydrocarbon and CO emissions increase at low load. In the dual fuel engine, premixing combustion is dominant. Its ignition delay and combustion duration are longer than those of the diesel engine.

双燃料发动机在中高负荷下的燃烧与原柴油机有很大不同，预混燃烧占主导地位，滞燃期和燃烧持续期较长，最大爆发压力及最大压力变化率较原机低，发动机运转柔和，噪声较低。

With the improvement of environmental requirements, premixed poor combustion gas turbines has been widely used in industry. But the thermoacoustic instability causes bad effects like noise and vibration during its work process.

随着环保要求的提高，预混贫燃燃气轮机被广泛应用于工业生产中，但热声不稳定这一现象在其工作过程中带来了一系列噪声和振动等不良影响。

Propagation and development characteristics of surface instability of the spherical premixed flames for methanol-air-nitrogen mixtures were studied by using a constant volume combustion chamber and high-speed schlieren photography system.

利用高速纹影摄像法在定容燃烧弹内研究了不同燃空当量比、初始压力、初始温度和气体稀释度下甲醇－空气－氮气混合气预混球型火焰的发展特性以及3种火焰锋面的不稳定性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。