The correlation formula of gas holdup was obtained when the holes area ratio of draft tube was 16.4% and the hydrofoil impeller was upward.

　
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  • 并得到在開(kāi)孔率為16.；4%25條件下，翼型軸流槳上提操作時(shí)的氣含率關(guān)聯(lián)式。
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