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But today's turbofan engines are so powerful and reliable that four may not be justified in future airliners.

但是现在的涡扇发动机功率很大并且很可靠，四发动机对于未来的飞机或许就不太合理了。

The next generation of Russian turbofan engines - the Al-41 - offers a dramatic increase in power and reliability.

俄国的下一代涡扇发动机Al-41在推力和可靠性方面都取得了更大的进步。

Aviation products: for domestic Yun-7 turboprop airliner matching 5 A -Ⅰ-type engine, turboprop engines 5E and direct 9 helicopter transmission system, Direct 8 helicopter reducer, direct transmission of 11 helicopters, as well as m 8 helicopter engine repair, as well as domestic and international aero-engine crankshaft, connecting rod, casing, such as subcontracting production projects, as well as aircraft landing with 3000kw gas turbine generator sets and so on the ground.

航空产品：为国产运7客机配套的涡桨5甲－Ⅰ型发动机、涡桨5E型发动机和直9直升机传动系统、直8直升机减速器、直11直升机传动系统等，还有米8直升机发动机修理以及国内外航空发动机曲轴、连杆、机匣等转包生产项目，以及航机陆用3000kw地面燃气轮机发电机组等。

The characteristics of turbulent flow in the cylinder of D. I. engines have been studied theoretically and experimentally.

以湍流的随机理论为基础，对k—ε双方程湍流模型进行各向异性修正。

This is especially important with the two-cycle engines that have become more and more popular recently.

这一点尤其重要，与两个周期的引擎已成为更流行，最近）。

POWER PLANT: Two 48.4kW Rotax 582 UL two-cycle, two-stroke, liquid-cooled piston engines.

电厂：两个48.4kW罗塔克斯582 UL认证两个周期，二冲程，水冷活塞发动机。

One of its innovations was a two-speed supercharger fitted on the engines of the Mk II, the first used on an RAF operational aircraft.

它的一个创新是一个双速增压器安装在发动机的马可福音二，第一次使用了英国皇家空军作战飞机。

It can used to do emission and performance test of two-stroke engines.

主要用来做两冲程通用汽油机的排放及性能实验。

Two-stroke engines can provide very high levels of torque.

二冲程发动机能提供相当高水平的扭力。

Firstly, simulation models for small two-stroke Sl engines are developed and discussed.

本文进行了二冲程汽油机的工作过程模拟及其在K100摩托车发动机上的应用研究，主要包括： 1。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。