The order of partial differentiation is immaterial.
偏微商的次序并不重要。
The method of harmonic balance is applied to study the non-linear dynamic response of the third-order nonlinear partial differentiation system.
应用谐波平衡法对系统三阶非线性微分方程组解析分析，与数值解比较验证了解析解的正确性和有效性。
The dynamic coefficients of tilting pad guide bearings are derived with the help of finite-elements using pressure parameters partial differentiation.
本文采用有限元法，利用压力参数法和偏导数法直接推求分块可倾瓦导轴承的动力特性系数。
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