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。
This paper discusses two issues respectively, one is economic performance assessment of transformers, and the other one is economical operation way of transformers.
通过评估参赛项目的环境、社会与经济性能，建筑的卓越程度和推广的可行性来角逐优胜者。
Winners were evaluated for their environmental, social and economic performance, architectural excellence, and degree of transferability.
利用生命周期成本评估方法对上海市柴油和CNG公交车的经济性能进行了评价（2003年价格）。
The difference of economical performances between a Shanghai diesel powered and a CNG powered bus is investigated by using life cycle cost assessment method (prices in 2003).
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