China is a water-deficient country as well as a water-extravagant, water-polluted and low water efficiency country.

我国不但缺水，而且用水浪费、污染水源和利用率低。

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The test results indicated that the variation of the spacing between propeller and rudder bulb has obvious effect on propeller open water efficiency.

试验结果表明，桨、舵球间距的变化对螺旋桨敞水效率的影响是明显的。

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Water efficiency provides long term water security by making use of the water we already have to sustain our communities and ecosystems.

提高水的利用效率，可长远保护我们社区和生态系统用水安全。

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What we can say is that water efficiency standards are a poor substitute for water prices that better reflect costs.

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Confronted with this reality, hotels must ensure that energy and water efficiency is routine, without compromising the pampering and convenience guests expect.

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Home Star legislation that would provide consumers with rebates for energy and water efficiency is on hold in the Senate, its future uncertain.

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