Equation Icon  [ 1 + σ (1 − xs)sinh ϕL,se′s + κL,s-coshϕL,sksos Bs (ω,− h∕2 ) = α------xs cosh ϕT,s----------------------ks-------------- 1 − σ D1,s ′ κL,s- ] − sinh ϕ (1-−-xs)cosh-ϕL,sos +-ks-sinh-ϕL,skses- . (7.23 ) T,s D2,s