大家好,请教移相零电压零电流软开关用pspice9.2仿真,

运行之后出现这个结果,是什么问题?向各位高手请教
ERROR -- Model IRF460 used by M_M1 is undefined
ERROR -- Model IRF460 used by M_M4 is undefined
ERROR -- Model IRF460 used by M_M2 is undefined
ERROR -- Model IRF460 used by M_M3 is undefined
ERROR -- Subcircuit MBR20035CT used by X_D1 is undefined
ERROR -- Subcircuit MBR20035CT used by X_D2 is undefined