1.The pylons are provided with quick-change structure for the hang rods, for unloading and downloading materials quickly.
该挂架具有供挂杆快速拆装的结构,可以快速上下料。
2.With this spectacles, it is unnecessary to change structure and making technique of film and TV.
本发明结构简单、制作容易、使用方便,并且不需改变电影、电视的结构及制作技术,极易推广使用。
3.To apply this control method, it is unnecessary to change structure of original control system and to add new equipment.
这种容错控制策略具有不改变原控制系统结构、不增加设备和简便易行的特点。