Jackscrew

A 2.5-ton screw jack. The jack is operated by inserting the bar (visible lower left) in the holes at the top and turning.

Antique wooden jackscrew for repair of cart and wagon wheels (Ethnographic Museum of Elhovo, Bulgaria)

A jackscrew is a type of jack that is operated by turning a leadscrew. In the form of a screw jack it is commonly used to lift moderately heavy weights, such as vehicles. More commonly it is used as an adjustable support for heavy loads, such as the foundations of houses, or large vehicles. These can support a heavy load, but not lift it.

单词	jack screw
释义	jack screw 英汉-汉英词典千斤顶螺丝词组 \| 习惯用语您要查找的是不是： Jack serew 千斤顶 ball jack screw 球面丝杆 Acme jack screw 梯型起重螺杆；详细翻译 hand jack screw 手力千斤顶；翻译 jacking g screw 起重螺丝 packing up screw 止动螺钉 JS Jack Screw 顶开螺栓 jack screw 千斤顶螺丝 jacking screw 顶起螺丝 screw jack n. 螺旋千斤顶 small screw jack 小螺旋千斤顶英语百科 Jackscrew A jackscrew is a type of jack that is operated by turning a leadscrew. In the form of a screw jack it is commonly used to lift moderately heavy weights, such as vehicles. More commonly it is used as an adjustable support for heavy loads, such as the foundations of houses, or large vehicles. These can support a heavy load, but not lift it. 英英词典 jack screw n. screw-operated jack synonymous： jackscrew, screw jack
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jack screw

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Jackscrew