针对一种磁力驱动的循环冲沙装置，提出了轴流式叶轮优化方案以提高叶轮水力性能。
In consideration of magnetic driven sand washing apparatus, an optimal design plan for axial-flow impeller is put forward for improving the hydraulic performance of blades.
与轴流式叶轮机械比较，离心式叶轮机械内部的流动更加复杂，亟待解决的问题也更多。
In comparison with the axial turbomachinery, the internal flow in centrifugal compressors is more complex.
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