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一、前言快速破坏是在含沙水中工作的水力机械普遍存在的问题,在我国这一问题尤为突出。图1表明了部分电站水轮机的破坏情况。
First, the preface Rapid destruction is a common problem of hydraulic machinery working in sandy water. This problem is particularly prominent in our country. Figure 1 shows the destruction of some hydroelectric turbines.