短語詞組短語layered control system 分層控制系統(tǒng)layered command system 層級(jí)指揮layered optimization system 分層優(yōu)化體系layered elastic system theory 層狀彈性體系理論layered pavement system 層狀路面體系layered composite system 層狀復(fù)合體系multiple layered elastic system 多層彈性體系layered distributive system 分層分布layered file system 分層式檔案系統(tǒng) 返回 layered system