为解决这一难题，进行了多项模型试验和现场试验，证实泥沙磨蚀为底孔破坏主要原因。
To solve such a problem, several model tests and site tests have been carried out.
水力机械的磨蚀是我国多泥沙河流上运行的机组长期以来面临的疑难问题。
Abrasion of hydraulic machinery is a knotty problem faced by hydraulic machinery operated in silt laden river in our country.
水轮机在含沙水流中运行时，常遭到泥沙磨损和磨蚀破坏。
The cavitation and abrasion of hydraulic turbines in the silt laden water were discussed.
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