This paper discusses two issues respectively, one is economic performance assessment of transformers, and the other one is economical operation way of transformers.

本文从上述两个方面，分别对变压器经济性能评估问题和变压器经济运行方式分析问题展开研究。

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If there is significant variation in the results, how can these be used for economic assessment when small performance improvements can lead to significant economic benefits?

当较小的路网性能改善能够带来显著的经济利益时，如果输出结果有显著的变化，它们如何在经济评估中使用？

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The assessment of various indicators should in accordance with economic criteria, efficiency standards, performance criteria and quality standards.

对各指标的评估依照经济标准、效率标准、效果标准、质量标准。

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As the Organisation for Economic Co-operation and Development (OECD) has pointed out in its latest assessment, the performance gap between America and the rest of the industrial world is widening.

ECONOMIST: Further to fall? | The