1) Phaedusinae
管螺亚科
2) tubing thread
油管螺纹
1.
Non-contact tubing thread intelligent detection based on computer visualization technique;
基于计算机视觉的油管螺纹非接触智能检测
2.
The author analyzes the impacts on tubing thread linking intensity of hydraulic tong with the finite element method,the Von Mises and contact pressure distributes of casing thread liking in condition of different holding position for backup tong have been obtained,and he puts forward the technological transformation measures of hydraulic holding system,designs a three-plate-style-tong-door.
采用有限元方法分析了液压钳对油管螺纹联接强度的影响,得到了背钳在不同夹持位置时油管螺纹联接的等效应力和接触应力分布,提出了液压钳夹紧结构的技术改进措施,设计出一种新型的三腭板钳口结构。
3.
An analysis is made of the factors affecting the reliability of numerically-controlled processing line of tubing threads.
归纳并分析了影响油管螺纹数控加工线可靠性的因素,从技术、管理两方面分别提出了提高油管螺纹数控加工线可靠性的具体可行措施。
3) casing threads
套管螺纹
1.
This paper focuses on computational analysis of casing threads joint performance in the steam injecting well.
针对注蒸汽热采井套管螺纹连接的性能进行了ANSYS计算分析,建立了套管螺纹连接的有限元计算模型,选择了接触分析模块,计算了热采井套管连接螺纹牙的受力分布,得出套管螺纹连接在热采井中的力学性能变化规律。
4) tube thread
油管螺纹
1.
Study on working feature of J55 tube thread;
J55油管螺纹工作特性研究
2.
Image Processing Method Study of Tube Thread;
油管螺纹图像处理方法研究
3.
Measurement of oil tube thread image;
油管螺纹图象的测量方法
5) cone-shaped thread
锥管螺纹
6) casing thread
套管螺纹
1.
In view of the problems such as low intensity,short lifespan of casing thread and the impact face of inner bit and outer bid in using process,the intensity of the accessories is analyzed with finite element technique.
针对钻具使用中出现的套管螺纹和内外钻头冲击面强度低、寿命短的问题,采用有限元方法对钻具的零件进行了强度分析,并提出了提高套管螺纹和内外钻头寿命的方法。
参考词条
补充资料：扁卷螺科
| 扁卷螺科 Planorbidae；trumpetsnail 软体动物门肺螺亚纲基眼目的一科。世界性分布。多为小型种，大部分贝壳呈圆盘状，螺层在一个平面上旋转，少数种类螺旋部升高。贝壳左旋或右旋。壳面光滑或有龙骨。无厣。触角细长，呈线状，眼位于触角基部。雌雄同体。血液含血红素。卵生。栖息于静水和缓流的水域。许多种类为人类和动物寄生吸虫的中间宿主，也危害绿肥、稻秧的培育。 |
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