Results show that there are different optimum swirls in different ranges of diesel engine operating condition.

试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。

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High efficiency liquid cooling system for optimum engine operating temperature - includes compact liquid cooled oil cooler.

高效率的液冷却系统为引擎提供了最佳的工作温度—他甚至还包含了一个紧凑的机油冷却器。

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It is necessary to decrease the thickness of the incrustation in the cooling system in order to keep the engine operating normally.

为保证发动机正常运转，必须减少冷却系水垢的厚度。

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If we build an engine for a car or anything else, it almost always is going to have some key element that's operating in a cycle, otherwise it won't keep going, right.

如果我们为一辆汽车，或其他什么东西制造一台引擎,它总要有一些关键，要素来形成循环。

麻省理工公开课 - 热力学与动力学课程节选

In addition, the two companies will work to foster a developer community through Google App Engine and the Android operating system.

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There's no reason Cummins can't do at least as well as Caterpillar's engine group, which typically posted 9% operating margins before its acquisition of Britain's Perkins Engine.

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News portal Sina.com.ch reported recently that Apple was considering embedding China search engine Baidu (BIDU) in its operating system next month.

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