The investigation results show that the existing vane design theory is rather too simple and there are less variables and methods for effectively controlling the vane configuration and geometry.

研究表明，现有轴流泵的叶片设计理论单一，缺少更多有效控制叶片形状的变量和手段。

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The middle child is influenced by many variables; however, middles are less likely to take initiative and more anxious and self-critical than others.

老二比较多变，然而，老二不太可能主动，也比其他人更焦虑、更易自我批判。

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Thus, you can gradually move your CSS to LESS, or if you're only interesting in using variables, or operations, you aren't forced to learning a whole new language.

因此，你可以平滑地由CSS迁移到LESS，如果你只是对使用变量或者操作感兴趣的话，你不需要学习一整门全新的语言。

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Many Medicare Advantage plans will ultimately get paid less next year due to several other variables like a premium tax that is called for in the health care overhaul, the massive federal law that aims to cover millions of uninsured people.

NPR: CMS Softens Medicare Advantage Funding Changes

David Sanders, an Essex University academic who studies the relationship between economic variables and voting intentions, finds his equations ever less trustworthy.

ECONOMIST: It would take a miracle to save the Tories on May 1st

Nevertheless, due primarily to the negative impressions many people have about so-called "trailer parks, " the value of a manufactured home is less than a third of a comparable site-built home, even when variables such as neighborhood, structural characteristics and geography are controlled, according to an analysis published in the Journal of Real Estate Research.

WSJ: 'Luxurious' Mobile Homes?