抽油杆

It is very important to research the precision forging process of double frustums sucker rod considering the conditions of our petroleum industry development.

针对目前我国石油工业发展的现状，开展抽油杆精锻工艺研究，具有极为重要的现实意义。

The precision forging process of double frustums sucker rod and its key process technology are researched in this paper by the way of numerical simulation and experimental study.

本文采用数值模拟和实验研究相结合的方法，对双圆台抽油杆精锻成形工艺及其关键技术进行研究。

Both bands are reprised a little later with "Tear the Roof off the Sucker" and "Jungle Jazz," respectively.

这两个波段重提了以&撕裂关闭抽油杆屋顶稍晚&和&丛林爵士，&分别。

On the contrary, loss of power will be resulted, In such kind of machinery, every component or part such as oil extraction rod, pin gear bearing in the axle of the reduction gear, steel wire rope, etc, will be under the influence of impact.

系统中的各个机械零部件如抽油杆、减速器轴上的针轮轴承、钢丝绳等寿命也都受到冲击的影响。

Small incisions are made in the skin and a blunt-ended metal sucker is passed through and moved around under the skin.

小切口是在皮肤和钝不限金属抽油杆是通过动议和周围的皮肤下。

And oil field sucker rod coupling of production and export.

及油田抽油杆接箍的生产，外销。

The deflection-proof and abrasion-proof sucker rod coupling is processed with some special technology, coated a layer of abrasion-proof, wear-proof and lessening friction coat.

双向保护抽油杆防偏磨接箍是在普通接箍的基础上涂敷一层耐磨蚀减磨涂层，经过特殊表面处理工艺加工而成。

Product description the deflection-proof and abrasion-proof sucker rod coupling is processed with some special technology, coated a layer of abrasion-proof, wear-proof and lessening friction coat.

双向保护抽油杆防偏磨接箍是在普通接箍的基础上涂敷一层耐磨蚀减磨涂层，经过特殊表面处理工艺加工而成。

By using elastic stability theory and in combination with field work, a method in calculating space when installing sucker rod lifter is worked out and an example is provided.

运用纵横弯曲梁及弹性稳定理论，结合工程实际，分析得出了在全井各种井段合理安装抽油杆柱扶正器间距的计算方法，并给出了计算实例。

Infact, these problems are greatly related with the viscoelastic property of the producedfluid, and the sucker rod is often working in a condition of eccentric in the tube, whicheven aggravates the problems mentioned above.

这些问题的产生与产出液的粘弹性特征不无关系，而抽油杆在油管中又往往处于偏心的位置工作，这更加重了以上问题的产生。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。