By taking advantage of rotating centrifugal force and the supporting effect of eccentric short drill collar, we cut off the axis inclination of bit, and avoid well inclination.

利用偏心钻具在旋转过程中的离心力和偏心短钻铤的偏重带的支撑作用，减小了钻头轴线倾角，从而减少了井斜。

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In this nail biting doomsday thriller, celebrated author Daniel Koontz tells the story of a community cut off from the outside while the entire world is under siege by a malicious alien force.

在这部扣人心弦的末日论惊险小说中，著名作家丹尼尔·孔兹讲述的故事是关于一个社区在全世界都受到外星邪恶势力的围攻之时，却与外部世界失去了联系。

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