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.

youdao

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.

youdao