Vortex cavitation has been an important problem in cavitation researches.
漩涡空化一直是空化空蚀研究中的一个重要问题。
In Francis turbines operating off design point the influence of vortex cavitation is considerable yet not quantitatively known.
以设计点为动力来运转轴向幅流叶轮机，涡空化的影响相当的大但无法用数据表示。
The boss vortex cavitation of propeller can be avoided by PBCF, and an increase of 2% in propulsion efficiency has been measured in the model tests.
桨毂帽鳍可改善毂涡空泡，模型试验状态下可提高推进效率2%左右。
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