我们可用普通微商代替偏微商。

We will replace the partial derivative by an ordinary derivative.

该方法能对修正的检测信号能量谱的对数微商求逆傅里叶变换。

The method consisted in taking the envelope of the inverse Fourier transform of a corrected measured signal.

采用数值微商求偏导数的方法,从而使GPS网平差的计算模型非常简洁.

The numerical partial derivative is introduced to simplify the GPS network adjustment model.

论述了多连通区域上可测系数的二阶非线性抛物[型]方程组的初-正则斜微商问题。

The initial regular oblique derivative problem for nonlinear parabolic systems of several second order complex equations with measurable coefficients in a multiply connected domain is discussed.

先给出斜微商问题的提法和解的表示式，然后采用复分析方法，证明了上述问题解的存在唯一性。

Firstly the formulation of the problems is given, and then the existence and uniqueness of solutions for the problems are proved by using a new complex analytic method.