回旋是导致PD C钻头早期失效的主要原因，介绍了一种基于挠性钻头的构想设计的抗回旋pdc钻头，阐述了其结构和抗回旋原理。

A kind of anti-whirl PDC bit designed based on the idea of flexible bit is introduced in this paper and the structure and working principle of it is expatiated.

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传达原则和方法，从而最有效地实现设计构想。

Conveys the principles and the means to most effectively achieve a design vision.

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我要特别感谢Chris Pearson，他设计构想了Cutline主题。

I need to give an extra special thanks to Chris Pearson for designing the Cutline Theme.

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