This paper analyses the contact stress between the rollers and the outer track of roller bearing in detail, and then concludes the contact stress of all kinds of the bearing rollers.

本文就三牙轮钻头滚动轴承滚子与外圈之间的接触应力进行了详细的分析，得出各种类型轴承滚子的接触应力分析情况。

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I walked along the outer edge of the track.

我沿着跑道的外缘走。

《牛津词典》

This photomicrograph was obtained by scanning a beam of electrons across the sample while a detector kept track of electrons bouncing off its surface, betraying the specimen's outer shape.

这幅显微照片是通过扫描穿过样品的电子束而获得的，同时检测器对从样品表面反弹的电子进行追踪，这些电子显示了标本的外形。

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Comets, which originate from the outer reaches of the solar system, are faster moving and harder to track than asteroids, but carry just as much potential for catastrophe.

ECONOMIST: The ultimate environmental catastrophe

The fat outer tire can be moved in and out on the axle before the race to achieve maximum cornering power for track conditions.

FORBES: Vroom!