Adopting the straight-line bearing and asynchronism electrical machineries of conical surface braking, operation is steady. 采用直线轴承及锥面制动三相异步电机，运作平稳。
The surface generated by a straight line,the generator,passing through a fixed point,the vertex,and moving along a fixed curve,the directrix. 锥面由一条直线，即母线，通过一固定点，即顶点，沿一给定曲线，即准线，连续移动而产生的平面。
