请教，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 9:35, Long long ago)] [ 传统版 | sForum ][登录后回复]1楼

这是一个数学的问题，在线等候回复，再次感谢[happycc (6-20 9:38, Long long ago)] [ 传统版 | sForum ][登录后回复]2楼

FDTD means finite difference time domainof course the finite difference discretization will cause the error which is measured by the order of accuracy.[赫连春水 (6-20 16:17, Long long ago)] [ 传统版 | sForum ][登录后回复]3楼

(引用 赫连春水:FDTD means finite difference time domainof course the finite difference discretization will cause the error which is measured by...)非常感谢，可以再说的详细些么？怎么理解这句话呀？[happycc (6-20 20:27, Long long ago)] [ 传统版 | sForum ][登录后回复]4楼