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该文介绍了水轮机尾水锥管里衬的结构,明确了里衬的计算方法和选择原则,并针对旧锥管不同情况提出了详细的改造方案.“,”Construction of draft tube liner is introduced in this paper. Calculating method and choosing principle for liner, and reformative scheme to different condition for old liner ere raised definitely.