The worse the water condition was, the lower the efficiency of transpiration was.

同一树种蒸腾效率随立地水分条件而变化，水分条件愈差，蒸腾效率亦愈低。

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From the performance perspective, the lower the efficiency of the impeller, the impeller is only equivalent to an ordinary closed around 70%, a relatively flat head curve.

从性能上讲，该叶轮效率较低，仅相当于普通闭式叶轮的70%左右，扬程曲线比较平坦。

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Recent years, there are many news about plagiarism on reseach, and the number of duplicated pages on the web is increasing, which lower the efficiency of search and put users to inconvenience.

近年来学术剽窃现象屡见报端，互联网上日益增多的重复网页降低了检索效率，给用户带来不便。

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And those with lower sleep efficiency, the amount of time they spent in bed asleep, were at higher risk too.

CNN: Study: Can more sleep help fight off colds?

The obvious way, apart from improving the efficiency of the tax office, to lower France's high rates of income tax would be to broaden the tax net.

ECONOMIST: Christian Sautter, France��s wary finance minister

My firm's research suggests that business and consumer confidence there is high, that there is not too much leverage in China's marketplace (leverage, not high prices, is what causes dangerous real estate and stock bubbles) and that the government is investing smartly in infrastructure projects like rail lines, subways and clean technology initiatives that improve economic efficiency and lower the costs of doing business.

FORBES: Leadership