design standard of flood control 洪水设计标准
standard design flood 标准设计洪水
design flood standard 设计洪水标准
extreme flood beyond design standard 特大超标准洪水
The Design Flood Standard 本次设计洪水标准
Seasonal design flood should not only satisfy the flood prevention standard but also reflect seasonal variation characteristics.
分期设计洪水既要满足防洪标准，又能反映洪水的季节性变化特征。
The constitution of design standard of flood control in hydropower station is an important technical policy.
水电站防洪设计标准的制定是一项重要的技术政策。
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