采用真值表法进行相机标定，将镜头畸变非线性微分化，有效克服了镜头畸变造成的影响。
The true value diagrams are used to do the camera calibration. This method takes nonlinear distortion of the lens.
这种类型的分化，是常用的古典微分几何。
This type of differentiation is commonly used in classical differential geometry .
采用时间和空间均为二阶精确的有限差分方法，将偏微分方程进行差分化。这样，空间的电磁场可由时间域有限差分法（FDTD）来求解。
The TM set of equations can be solved using a finite difference time domain (FDTD) approximation that is second-order accurate in both space and time.
采用时间和空间均为二阶精确的有限差分方法，将偏微分方程进行差分化。这样，空间的电磁场可由时间域有限差分法（FDTD）来求解。
The TM set of equations can be solved using a finite difference time domain (FDTD) approximation that is second-order accurate in both space and time.
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