往复

The carrier in parking system of flatness and reciprocator tyPe is composed of ambulatory and transverse gadget.

平面式停车设备中搬运器由行走机构和横移机构组成。

The crank and connecting rod mechanism (CCRM) is often used in automatization machineries.It can transform circumrotation movement into to-and-fro beeline movement.

摘要曲柄连杆机构是自动化中最机构之一，它可使旋转运动与直线运动相转化。

The tribophysics of the cylinder liner—piston rings in an internal combustion engine is a typical tribological system with the reciprocating motion and the impacting motion.

内燃机缸套——活塞环摩擦副系统是一个集、击于一体典型摩擦学系统。

Second process: After operated by the front forward gas baffler, the paper reciprocates to the drum of the second layer to perform flanging of the backside.

纸张经后推气挡板之作，再至第二层滚筒完成前边折边。

Third process: After operated by the back forward gas baffler, the paper reciprocates to the drum of the third layer to perform flanging of the front side.

纸张经前推气挡板之作，再至第二层滚筒完成后边折边。