It is very important to resolve the problems of anti-friction ring failure due to partial worn at Northern Erdos Work Areas by reasonable selection of high-abrasive materials and welding techniques.

选择合理的耐磨材料与敷焊工艺对解决鄂北工区钻杆偏磨耐磨环失效问题非常重要。

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Teflon Piston-ring integrated with piston, not only reduce the friction and noise, but also avoid inner-leakage.

特氟龙材料的活塞环与活塞熔接成一体不仅减磨效果好，同时能减少噪音防止内泄。

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There is much prestressing loss for friction resistance among wedge, steel strand and anchor-ring in engineering.

预应力张拉施工中夹片、钢绞线和锚环之间存在着很大的摩擦阻力。

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Another major difference is that Palm's dock uses magnets to line up and secure the handset, and LG's accessory relies solely on the friction between a rubber ring and the glass back of Google's flagship phone.

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