Two jack screws must be provided in Windows and die section for ease of removal. All sections that do not have jack screw holes must have pry slots.

在窗口入子上应使用两个起吊螺丝方便移出，所有的没有起吊螺丝的入子必须有撬模槽。

The utility model relates to a jack screw and plug screw driver, which is characterized in that a hole is drilled along an axial direction in a screw, and a plug is added on the head of a screwdriver.

一种插孔螺钉及插头螺丝刀。它是在螺钉上沿轴向钻了一个孔，在螺丝刀头部加了一个插头。

We can adjust the levelness of the machine by means of shim and screw jack.

我们可以利用垫铁和螺丝千斤顶来调整机器的水平度。

The lifting capacity of this chain hoist (hydraulic jack, screw jack) is 5 tons.

这个倒链（油压千斤顶、螺旋千斤顶）的起重能力为 5 吨。