The theories established in this paper give directions to the current design and produce of the three screw pump; and also give solutions of the problems during usage.
本文的基础理论研究对当前的螺杆泵的设计生产都有很好的指导作用，对当前三螺杆泵使用中出现的问题有很好的解决效果。
Therefore, how to further improve the performance of the screw machinery, especially reduce screw compressor operation consumption, was still the current development of the major issue.
因此，如何进一步改善螺杆机械的性能，特别是降低螺杆空压机的运行能耗，仍是当前研发的重大课题。
Background the current "gold standard" for treatment of chronic fracture nonunion in the metaphyseal-diaphyseal region of the fifth metatarsal is intramedullary screw fixation.
背景：目前治疗第五跖骨干骺端慢性骨不愈合的金标准是髓内螺钉固定。
B, single screw pump before adding buffer tank in pipeline, the buffering can store a certain amount of crude oil, and a current limiting device for mixture pumps supply a certain amount of crude oil.
单螺杆泵前管路中增设缓冲罐，在缓冲罐里储存一定量的原油，并用一套限流装置给混输泵供给一定量的原油。
The article is relative research for air current distributing machine and screw filling machine in the application of producing sterile powders for injection.
本文对气流分装机与螺杆分装机在生产中的应用进行了对比考查。
The current market has cooled screw machine, water two kinds, according to evaporation way and points dry and full of liquid.
目前在市场上的螺杆机有风冷、水冷两种，按蒸发方式又分干式和满液式。
A pumping rod housing lock joint of a screw pump is primarily used to resolve the problem that the current screw pumping rod joint is easy to release.
一种螺杆泵抽油杆防脱扣接头主要解决现有螺杆泵抽油杆接头易脱扣问题。
The current status of screw pump production, development tendency and producing principle of screw pump are summarily introduced in the thesis.
本文概括性地介绍了螺杆泵采油现状、发展趋势、螺杆泵的采油原理。
The current widespread use of the powder conveying way is to screw conveyor conveying, large mixing floor has adopt pneumatic conveying and scraper conveyor.
目前普遍采用的粉料输送方式是螺旋输送机输送，大型搅拌楼有采用气动输送和刮板输送的。螺旋输送的优点是结构简单、成本低、使用可靠。
Based on the current elastic deformation theory of single-nut ball screw, a model of ball screw was developed and a modified formula of axial deformation of ball screw was derived.
基于现有的单螺母滚珠丝杠副弹性变形理论基础，建立了滚珠丝杠副弹性接触变形的模型并得到改进的轴向变形公式。
This invention is aimed to solve current screw extraction problem, and empolders structure-changed intramedullary nail to reduce suffering of patients in screw extraction.
本发明的目的为了解决现有的髓内钉断钉取出的问题，开发在结构上改变了的髓内钉，以减少断钉取出时给病人带来的痛苦。
Starting with the current situations of the screw pump lifting, this paper analyzes the adaptability of the screw pump lifting in alkali-surfactant-polymer flooding and poi...
从三元复合驱螺杆泵举升技术现状出发，分析了螺杆泵举升在三元复合驱应用的适应性，给出了螺杆泵举升技术的应用效果。
Starting with the current situations of the screw pump lifting, this paper analyzes the adaptability of the screw pump lifting in alkali-surfactant-polymer flooding and poi...
从三元复合驱螺杆泵举升技术现状出发，分析了螺杆泵举升在三元复合驱应用的适应性，给出了螺杆泵举升技术的应用效果。
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