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将微分求积方法推广到输液曲管的稳定性分析，这是一个新的尝试。与其它数值方法相比，该法极易处理具有弹性边界的输液曲管，另外，由于避免了一系列数值积分的计算，故计算量较少，精度令人满意。在此基础上，本文还研究了若干参数对其临界流速的影响。
It is a new attempt to generalize the method of differential quadrature to the analysis of the stability of the infusion tube. Compared with other numerical methods, the method is very easy to deal with the infusion curved pipe with elastic boundary. In addition, because of avoiding a series of numerical integral calculation, the calculation is less and the accuracy is satisfactory. On this basis, the paper also studied the impact of several parameters on the critical flow rate.