1、

To overcome the shortcomings of the shear pin type joint and left-hand thread type joint, a sliding sleeve subsurface safety joint is developed.

为了克服剪钉式和反扣式两种安全接头的不足,研制出一种滑套式井下安全接头。

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2、

RESULTS: From the biomechanical point of view, the locked intramedullary pin and C type sliding bar fixing apparatuses have many biomechanical virtues and some defects.

结果:生物力学观点认为,带锁髓内钉和C型滑杆式骨科固定器具有较多的生物力学优点同时也存在着某些不足。

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4、

The wear characteristics of polytetrafluoroethylene ( PTFE) were tested on the model MPX-200 pin-on-disk tester in this paper. The effects of sliding speed, load, temperature and surface roughness of counterparts on wear were determined.

作者用MPX-200型栓-盘摩擦磨损试验机测试了模压聚四氟乙烯的磨损性能,考察了滑动速度、负菏、温度及偶件表面粗糙度对磨损的影响。

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5、

The regression model and BP network model all could be used to predict the pin on disk dry sliding wear rate, but the BP model forecast were more accurate.

回归模型和BP网络模型都能够用来对销盘磨损率进行预测,但BP模型预测的精度更高。

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6、

Then, contact stress and deformation of a half sphere micro-convex was simulated and calculated by using finite element analysis software ( ANSYS), and the testing model of pin-on-disc sliding wear was proofed through test data.

采用有限元分析软件ANSYS对半球形微凸体接触应力和变形进行了仿真计算,并用销盘滑动磨损试验数据给予验证,证明了所建立的仿真模型是可行的。

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7、

The effect of sliding velocity on the friction behaviors of in situ granular 7+ ( Fe, Mn) 3C eutectics reinforced austenite steel matrix composites ( EAMC) has been investigated by the pin-on disc dry sliding tests and scanning electron microscopy ( SEM) observation.

利用MPX-2000型主轴盘销式磨损实验机和扫描电子显微镜(SEM)研究了相对滑动速度对团球γ+(Fe,Mn)3C共晶体增强奥氏体钢基自生复合材料(EAMC)摩擦学性能的影响。

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8、

The carbides in the matrix prevent dislocation from moving, and pin effect of the carbides in the grain boundary keep grain boundary from sliding, and creep resistance of steel is improved.

蠕变期间,晶内碳化物阻碍位错运动,晶界碳化物“钉扎”晶界,阻碍晶界滑动,由此提高钢的蠕变抗力。

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9、

This paper presents a method of calculating static sliding friction factor between zigzag slot and pin.

该文给出了求解惯性筒上的曲折槽与销之间的滑动静摩擦系数的一种方法,介绍了引信曲折槽机构.

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10、

The wrist pin is fitted with a copper alloy bushing for improved sliding characteristics.

手腕脚装有铜合金滑动的特点,以提高套管。

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