The design flood region composition is an important subject of hydroelectric project planning and design.
设计洪水地区组成是水利水电工程规划设计中的一个重要研究课题。
As being influenced by the activities of human beings, the composition of region of design flood has been more and more taken notice of.
由于人类活动的影响，设计洪水的地区组成越来越引起人们的重视。
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