The working principle is similar to that of the ordinary hydrauliccylinder, with a manual jack, Jack is also the simplest oil cylinder.
工作原理与普通的液压油缸基本相似，拿一个手动千斤顶来说，千斤顶其实也就是个最简单的油缸了。
2
This paper expounds the design of processing techniques before hole-boring on the cylinder of upright post and hoisting jack used in the hydraulic support.
阐述了液压支架所用立柱、千斤顶的缸筒在上深孔钻镗床进行镗孔、滚压之前必须进行的加工工艺的设计。
3
Hydraulicjack: Uses the plunger or the hydrauliccylinder goes against as the rigidity lifts a hoisting jack.