使用语句open('F:\MOSN12_25_p2.mdl') 然后提示??? Error using ==> open'F:\MOSN12_25_p2.mdl' is an invalid model name or the file 'F:\MOSN12_25_p2.mdl' does not exist.这是怎么回事啊!!求教!!在线等,谢谢!