下层甲板的主梁必须立即用螺旋千斤顶进行支撑。
The main-beams of the lower deck had to be shored with screw-jacks forthwith.
自降螺旋千斤顶的螺纹无自锁作用，装有制动器。
From falls screw jack's thread non-self-locking action, is loaded with the brake.
这个倒链（油压千斤顶、螺旋千斤顶）的起重能力为5吨。
The lifting capacity of this chain hoist (hydraulic jack, screw jack) is 5 tons.
普通螺旋千斤顶靠螺纹自锁作用支持重物，构造简单，但传动效率低，返程慢。
The ordinary screw jack depending on the thread self-locking action support heavy item, the structure is simple, but the transmission efficiency is low, the return trip is slow.
液压千斤顶又称机械式千斤顶，是由人力通过螺旋副传动，螺杆或螺母套筒作为顶举件。
The hoisting jack calls the mechanical hoisting jack, is by the manpower through the screw vice-transmission, the screw rod or the nut sleeve achievement goes against lifts.
螺旋千斤顶能长期支持重物，最大起重量已达100吨，应用较广。
The screw jack can the long-term support heavy item, the greatest lifting capacity amount to 100 tons, the application is broad.
目的：利用螺旋CT脊柱三维重建软件重建棘突顶线，并与手法医师触诊结果进行对照。
AIM: to reestablish the apical line of the spinous processes with helical ct three-dimensional reconstruction software, and compare the result with the touch diagnosis by orthopedic doctor.
这个吊链（油压千斤顶、螺旋千斤顶）的起重能力为5吨。
The lifting capacity of this chain hoist ( hydraulic jack , screw jack ) is 5tons.
测量齿顶圆直径估算分度圆螺旋角，用分度头在铣床上修正分度圆螺旋角，并进行误差分析。
The spiral angle of graduated circle was rough estimated by measuring the addendum circle diameter and modified on milling machine.
LZ系列螺旋闸门用于建材、冶金、矿山、电力、化工、玻璃、轻工、粮食等行业的库顶、库底及进出口等。是控制流量变化较大，启动频繁，切断迅速的理想设备。
LZ series screw gate is used in top silo, bottom silo, inlet and outlet etc. of building material, metallurgical, ore, electric power, chemical industry, glass, light industry and foodstuff etc.
提出了将螺旋千斤顶加压的硫化器改造成液压千斤顶加压、保压的液控硫化器的改进方案。
Puts forward the hydraulic control scheme that spiral jack is reformed hydraulic jack to raise pressure and preserve pressure.
一个轮胎有一顶王冠，其中包括一个面向层的圆周，螺旋缠绕加固线程。
A tire having a crown which includes a ply of circumferentially oriented, helically wound reinforcing threads.
介绍了一种实用的内侧槽抽芯机构，可利用螺旋形弹簧钢板的顶出变形实现内侧抽芯，并阐述了抽芯机构的工作过程和关键技术。
A practical mechanism for the core-pulling of inside groove was presented. The core-pulling was achieved by applying the deformation of helical spring steel sheet during the ejecting process.
在该工程中采用了新颖的伞型斜向支撑技术，并利用螺旋式千斤顶进行主动支顶。
In connection with an engineering example, this paper introduces the application of a novel active roof-propping technique which uses umbrella-shaped braces and screw jacks for active propping.
这个吊链（油压千斤顶、螺旋千斤 顶）的起重能力为5吨。
The lifting capacity of this chain hoist (hydraulic jack, screw jack) is 5tons.
该产品选用了螺旋千斤顶制作的移动平台有着广阔的应用范围。
This product selection in the spiral thousand 3 Jin made top mobile platform has a wide application scope.
螺旋千斤顶：采用螺杆或由螺杆推动的升降套筒作为刚性顶举件的千斤顶。
Screw jack: Uses the screw rod or the fluctuation sleeve which impels by the screw rod goes against as the rigidity lifts a hoisting jack.
螺旋千斤顶：采用螺杆或由螺杆推动的升降套筒作为刚性顶举件的千斤顶。
Screw jack: Uses the screw rod or the fluctuation sleeve which impels by the screw rod goes against as the rigidity lifts a hoisting jack.
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