FINISH /CLEAR /PREP7 ET, 1, MESH200 !定义单元 KEYOPT, 1, 1...答:FINISH /CLEAR /PREP7 ET, 1, MESH200 !定义单元 KEYOPT, 1, 1, 6 !4节点的四边形单元 ET, 2, SOLID45 !四面体三维单元 MP, EX,1, 2.1e11 MP, NUXY,1, 0.3 MP, DENS, 1,7800 BLC4, 2, 0, 3, 10 ESIZE,0.5, !为啥改成“ESIZE, 0.5, ”就不行 TYPE, 1...