The number concentrations of nuclei mode increase with the increase of load at high engine speed, and the number concentration of nuclei mode varies little with load at middle engine speed.

中间转速下积聚模态峰值粒径随负荷增大先增大后减小，高转速下积聚模态峰值随负荷变化无明显变化。

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During the middle three phases of the buying process, a search engine is heavily employed.

在顾客购买过程的中间三个阶段，搜索引擎得到了重用。

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The sizing of the middle tiers depends on the architecture of the game engine itself.

中间层的规模取决于游戏引擎本身的体系结构。

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It could be the sight of two men assembling a photographic rig that looks like some sort of siege engine in the middle of the street at 1am, or it could be the Cayman.

BBC: In search of the perfect road in Mallorca

What you see in the diagram above is that the framework maintains the in and out points of the WebKit flow, but takes a detour in the middle using its own physics engine, render engine and rules framework to replace the native WebCore functions.

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It's unions like yours that forged the American middle class -- that great engine of prosperity, the greatest that the world has ever known.

WHITEHOUSE: President Obama Speaks on the Resurgence of the American Auto Industry | The White House