This paper introduces several common packed hole and well straightening assemblies.

本文介绍了几种常用防斜、纠斜钻具组合。

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In this article, the principal factors affecting hole curvature are analysed, the principle of anti-deflecting packed hole assembly design is discussed.

本文分析了影响井眼曲率的主要因素，论述满眼防斜钻具组合设计的原则。

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Once at the tracking station, Greg reached into the tiny hole and packed grease around the failed bearing.

格雷格·福思一到站里，立刻就把他的小手伸进了这个小孔并把油脂涂抹在已经失效轴承的四周。

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Once at the tracking station, Greg reached into the tiny hole and packed grease around the failed bearing.

CNN: The 10-year-old who helped Apollo 11, 40 years later

If you were to assume that every point in the universe contained some information, then even a small office would be so densely packed with particles that it would collapse in on itself like a black hole, says Raphael Bousso, a physics professor at the University of California, Berkeley.

FORBES: Flatland?