duplexorn.双工器duplexn.双层公寓；联式房屋adj.双倍的；复式的；[计] 双方的duplex machine system双机系统duplex nickel plating双层镀镍duplex vacuum plodder双联真空压条机duplex number service双重编号业务duplex authentication双向鉴权duplex Doppler system双重功能多普勒系统duplex blotting paper双层吸墨纸duplex microstructure双态组织duplex grate producer双篦发生器duplex helical method双重螺旋法