查询词典 lifting jack

At present in the field of the civil engineering , tension construction adopts that drives a lifting jack from the oil pump carrying out the pulling force pulling, controlling from numerical piezometer and controlling the construction stretching long values by manpower measures.

目前在土木工程领域中，预应力张拉的施工主要采用的是由油泵驱动千斤顶进行张拉，由压力表读数控制张拉力，人工测量控制张拉伸长值的施工工艺。

Where can purchase the machinery lifting jack?

哪里可以买到机械千斤顶？

From 1985 began manufacturing and development of various vertical, horizontal hydraulic jack, is specialized in producing hydraulic lifting jack and tools businesses.

从1985年开始制造和开发各种立式、卧式油压千斤顶，是专业生产千斤顶及液压起升工具的企业。

The lifting jack go over which before being put into use component must?

千斤顶在使用前必须检查哪些部件？

Key words:steel gallery; integral lifting; jack; synchronous control

关键词］钢连廊；整体提升；千斤顶；同步控制

The characteristics of using the JK-120 hydraulic lifting jack are introduced. Combined with the successful field application of the lifting jack to the Bohai SZ36-1J16 well, the risk evaluation on the using of the lifting jack is discussed.

介绍了JK-120型液压举升器的使用特点，结合JK-120型举升器在渤海SZ36-1J16井的现场成功应用，阐述了该设备的现场操作规程及作业过程中的风险评价内容。

Field application shows that the lifting jack features in easy and secure operation and low cost during the process of removing sticking. It has broad prospect in the market and has great economic results.

现场使用结果表明，液压举升器在修井解卡作业中操作简便、安全、成本低，市场前景广阔，经济效益十分显著。

This paper introduce the reform of river-crossing simply brdge by using ultrathin lifting jack ,this mode avoided the foundation treatment under the bridge,reduced the influence of the river and the adjacent environment.

介绍了跨河简支梁桥采用超薄千斤顶少支架整体抬升的工艺，从而避免了桥下河底的地基处理，降低了对河道及周边环境的影响，并结合抬升施工对过河管线进行了相应改造，改善了桥梁景观效果。

But as was so often the case with Jack, the warning came too late: no sooner had he taken hold of the sphere than it shot toward the ceiling, lifting Jack off the floor.

但一如既往，对杰克来说这个警告来得太迟了；在这个圆球射向洞顶前，杰克一把抓住了它，而它也带着杰克离开了地面。

It illustrates technology of construction of provisions room from support system of sliding formwork platform、 selection of lifting jack、 height of climbing form, puts forward construction measures of climbing form in winter, which to improve construction level of provisions room.

从滑模操作平台支承系统、升千斤顶选用、升模板高度选用等方面，阐述了粮食筒仓建设施工操作的技术，提出了滑模的冬季施工措施，以提高粮食筒仓施工技术水平。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。