The value classification system of natural resource was built up to estimate efficiency and functional value of typical ecosystems.

通过建立自然资源价值分类体系，估算典型生态区生态系统效益功能价值。

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Knowing this, researchers can estimate its efficiency.

了解了这些，研究者们可以估计它的效率。

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The concept and method of exposure efficiency are used to precisely estimate the pollution intensity at a specific region resulted by various air pollution sources of industrial sectors.

为了精确地估算产业部门不同类别与特征的大气污染源对指定区域的污染强度，采用暴露效率概念及其研究方法。

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If this benefit is greater than a plausible estimate of the efficiency savings from the merger, then it should be halted.

ECONOMIST: Economics focus

GM's researchers estimate its thermal efficiency at somewhere between 53% and 67%.

ECONOMIST: Selling fuel cells | The