F=W,+ F=1=W1x1,+W2x1m F(1-x1 3-63) XI w2 XI D1=D2+H2 (3-65) D,XD. =D2x1D, +W2*, XI, 2-XL.D XLD, -x x1 RLD. -X Wx +w. (3-68) F=W,+n V1=L1+W2 VInal=lx+w2 y V W (71) Nx=N+(c+2)+(+2)=c+c+4+N N伟串级)=1 G c Ly Cp./ G, Cp v=2.5F =W1 +W2 (3-61) w2 , Fz W x W x 1 = 1 1,w 1 + 2 1 (3-62) ( ) 1 2 2 1 1 1 1 1 ,w ,w ,w x x F z x W − − = (3-63) ( ) 2 1 2 ,w ,w ,w 2 x x F z x W 1 1 1 1 − − = (3-64) D1 = D2 +W2 (3-65) 1 2 w2 ,D ,D , D x D x W x 1 1 = 2 1 + 2 1 (3-66) ( )         − −         − − = − − = 1 2 2 1 2 1 1 1 1 2 1 ,D ,D ,w ,D ,w ,w ,w ,D ,D ,w ,D x x x x x x z x F x x W x x D 1 1 1 1 1 1 1 1 1 1 2 1 1 2 (3-67) w w2 Fx W x W x f = 1 1 + 1 (3-68) F =W1 +W2 (3-69) V1 = L1 +W2 1 1 n 2 w2 V y = L x +W x n+1 w2 2 x V W x V L y 1 n 1 1 n+1 = + (3-70) 1 1 2 w2 V y顶 = L x回 +W x w2 x V W x V L y 1 2 1 1 顶 = 回 + (71) Nx = N + (c + 2)+ (c  + 2) = c + c  + 4 + N Na (串级) = 1 LM CP,L GM CP,V LM CP,L GM CP,V = 2.5