作者将气举装置看成一个系统，分析了影响气举效率主要因素了。

Secondly, the airlift equipment treated as a system, analyzed the mostly factors that affected efficiency of lifting.

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研究了气举的物理模型，探讨了自激振荡脉冲射流作为气举装置破碎器的可行性。

The physical model of airlift is given in this paper. The feasibility of the self-excited oscillation pulsed jet as breaker of the airlift is researched.

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研究了气举的数学和物理模型，探讨了自激振荡脉冲射流作为气举装置破碎器的可行性。

The physical and mathematical model of airlift is given in this paper. The feasibility of the self excited oscillation pulsed jet as breaker of the airlift is researched.

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