{"version":"1.1","math":"\Gamma_e=\frac{\Gamma_P+\Gamma_E}{2}"}ΓwAw(ϕE−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ϕP−ϕWδxWP{"version":"1.1","math":" \frac{\phi_P-\phi_W}{\delta x_{WP}}"}

(ϕE−ϕWδxWP){"version":"1.1","math":" \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ΓwAw(ϕP−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_P-\phi_W}{\delta x_{WP}}\right)"}