A coaxial two-wheel vehicle with which a rider stably travels without the upper body being swayed left and right in a riding state of the center of gravity being positioned high is provided.
本发明公开一种共轴两轮车辆，在重心很高的骑乘状态下，骑乘者可稳定行驶，其身体上部不会左右摇晃。
The die design and technique of gravity die casting process for driven belt wheel are introduced. The causes and corresponding resolving methods of some typical defects are analyzed.
介绍了采用金属型铸造生产铝合金驱动板的模具结构和铸造工艺；对驱动板几种典型缺陷产生的原因和解决方法进行了分析。
应用推荐