以下为句子列表：
英文: It is mainly by analyzing the features of sediment concentration distribution in vertical in this paper, and then the problems of effect of headwork gates on sediment prevention, relation between distribution of sediment deposition in irrigated areas and
中文: 本文主要从分析计算含沙量沿垂线分布特点，探讨渠首防沙的作用，分析灌区泥沙淤积分布特性与泥沙处理利用的关系，分析计算引水引沙对黄河下游河道冲淤影响及入渠泥沙的处理利用等问题。
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