The other is a mechanical automatic reversing mechanism designed for atmospheric pumps, which adopts involute (zero pressure Angle) CAM mechanism as reversing mechanism.
另一种是为气压泵设计的机动自动换向机构，该机构是利用渐开线(零度压力角)凸轮机构作为换向机构。
2
In the course of reversing, the driver should carefully observe the space on both sides of the front so as to avoid scratching arising from an unduly large turning Angle.
倒车过程中，要随时注意车头两侧的空间位置，以免因转向角度过大而发生刮擦事故。
3
The utility model can automatically adjust the observation Angle of the automobile rearview mirror in the reversing process, thereby bringing great convenience to the driver.