The height of two hooks on mainpole can be flexibly adjusted for different hanging requirements.
主杆上的两个挂钩也可以随意自由调节高度，方便各种挂衣要求；
2
Fixed, and then branch and the mainpole corresponding to the connector to connect the power cord can be inserted, sturdy and convenient.
固定，再将枝条和主杆上相对应的电源线插接头连接即可，坚固便捷。
3
The opening air-gaps with circular mainpole arc are usually used to improve the potential curve of commutator on non-compensable d. c. traction motors.