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引用第2楼saiyfmac于2011-09-08 12:53发表的 : jN[P$}#b` 前半部分比较好理解 bdS The first is that the values of array E are updated at time @N tiT,3k step n + 1/2 whereas the values of array H are updated at time n + 1: <8 $fo 第一个要注意的地方是: `(2Y%L(r 数组E是在n+1/2时间的时候,计算,更新的 #N?VbDK9_ ....... `RF0%Vm~t