请教一个数学的问题，非常感谢下面这段话不很理解,尤其不明白跟精度有什么关系?这是个很数学的问题，请懂帮我分析一下.非常感谢。

The FDTD algorithm is second-order-accurate by nature of the central-difference approximations used to realize the first-order spatial and temporal derivatives. This leads to a discrete approximation for the fields based on a uniform orthogonal lattice. [happycc (6-20 9:36, Long long ago)] [ 传统版 | sForum ][登录后回复]1楼