我们可用普通微商代替偏微商。
We will replace the partial derivative by an ordinary derivative.
偏微商的次序并不重要。
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.
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.
应用推荐