格(,1)FxF,“f22/FyF 14+ 40×68 196 0.07214 (2,1)y 22 40×684 4844 0.17794 32 40×68 10244 3765 (1.2 184 40×42 324 000 19294 (2,2) 40×424 256 .15244 40×424 0.03814 (1,3) 40×104 64 0.16004 (2,3) 40×104 0.0100 (3,3) 04 40×104 0 0.00004 合计 120 1.1799