<正> In the context of the top-color-assisted technicolor (TC2) model, the flavor-changing neutral-current(FCNC) interaction induced by the top-higgs (h_t~0) ar
<正> Mei symmetry and Mei conserved quantity for a non-holonomic system of non-Chetaev's type with unilateralconstraints in the Nielsen style are studied.Th