All transmissionshafts are chrome plated to increase hardness.
所有转动轮镀铬，增强硬度。
2
Front and back transmissionshafts are located on top of folding beam to save space.
前后折叠轴安装在折叠杠顶部以节省空间。
3
The series of locomotive transmissionshafts are cylindric welded components with small diameter, which have many welding difficulties and high quality requirement.