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In order to know the influence of the variable-pitch inducer to the centrifugal pump's cavitation, the flow in the centrifugal pump is numerically calculated. 爲明確前置變螺距誘導輪對離心泵汽蝕性能的影響，對前置變螺距的離心泵全流道進行了數值計算。
In order to get a good performance on preventing cavitation, the impeller of magnetic driving pump is designed in low-NPSHR method and variable-pitch inducer is installed. 爲了獲得良好的抗汽蝕性能，對磁力泵葉輪採取低汽蝕餘量設計措施，同時配置變螺距誘導輪。