The environmental impact synthetic assessment based on entropy weight and construction scheme optimum selection problems of hydroelectric stations were approached.
采用基于熵权理论的方法综合评价环境影响，应用于水电站建设方案的优选。
The environment impact synthetic assessment and construction scheme optimum selection problem of hydroelectric plant on the basis of catastrophe theory is approached.
基于突变理论，对水电站环境影响综合评价及建设方案优选问题进行了探讨。
The paper detailed discusses the cause, meaning, controlling program, the dealing principle of time limit for a project and cost of change in the work, and discussing construction scheme optimum.
本文就工程变更的原因、意义、控制程序、变更工期和价格的处理原则、施工方案的优化进行了较为详尽的论述。
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