Equation Icon  1 b,r = ---rhAC hBD hAB,r hCD,r, (22) ( ) 16 ( ) r4e- 2bhABU B,r ,r = 2r4 r -2b,A ,r - r2hBC DC (hAB,r) (23) (( ) ) 2e-2bV,r = R - 2DADAb - 2(DAb)DAb + r- 2e- 2bDA r4U A ,r - 1r4e- 4bhAB U AU B, (24) 2 ,r ,r