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给出了有液体作用时盘的传递矩阵，然后计算了三盘双支承同轴涡轮泵转子的临界转速，对计入和不计入液体作用时的频率谱和临界转速值作了比较，结果表明频率谱有质的区别，液体对泵轮的作用显著影响转子的临界转速值
The transfer matrix of the disc with liquid action is given. Then the critical speed of the three-disc double-bearing coaxial turbo pump rotor is calculated, and the frequency spectrum and the critical speed of the turbo pump with and without liquid are compared. The results Show that there is qualitative difference in the frequency spectrum, the effect of liquid on the pump wheel significantly affects the critical speed of the rotor