Energy use efficiency of an engine is improved.

改善发动机的能量利用效率。

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The results shows that solar energy use efficiency improves a lot through optic-electro and optic-thermal composite utilization.

结果表明，通过光电-光热综合利用能够对太阳能利用效率实现有效提升。

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This article further analyzes the total energy composition and the method to raise the energy use efficiency for water supply on the basis of research of predecessors.

该文在前人的研究基础上进一步分析了供水所需总能量的组成和提高供水能量利用方法。

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to put in place policies that incentivizes people to use things such as energy efficiency

他们制定了一些政策，鼓励人们使用能效高的产品，

全球变暖与国力 - SpeakingMax英语口语达人

The more efficient we are in our energy use, the more energy we will use because efficiency makes it cheaper to consume.

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It also aims to double the use of both energy efficiency tools and renewable energy fuels during the same time period.

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Enhancing the efficiency of energy use is, hands down, the most cost-effective way to mitigate the environmental impact of energy use while fueling economic growth.

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