The invention discloses a formulation of the nano composite material of a bit tooth, which is used for improving the life of the air percussion bit tooth.

本发明公开了一种钻头牙齿纳米复合材料的配方，该发明用于提高空气冲钻钻头牙齿的寿命。

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Steel tooth bit can increase the bit's stability and lower the tooth impact load, and enhance its wear resistance.

钢齿牙轮钻头增强了工作的平稳性，降低了牙齿的冲击载荷，使牙轮钻头的耐磨性能得到提高；

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The single tooth cutting course of a PDC drilling bit is studied. The research is of great significance for improving PDC drilling bit design.

为了改进PD C钻头设计，在全尺寸试验的基础上，对PD C钻头单齿切削过程进行了试验研究。

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Several of the book's 11 stories are set in Elk Tooth, a two-bit town of three bars and 80 residents, many with mouth-clogging names: Gilbert Wolfscale, Hard Winter Ulph, Wiregrass Cokendall.

ECONOMIST: New fiction

All he had discovered was a piece of ape-like skull, a tooth and, some way away, a bit of humanoid femur, which he believed came from the same individual.

ECONOMIST: How man has learned, through history, about his habitat

"Your honor, last night I bit down on something, and I have an abscess in my tooth, " Muhammad said, according to the court transcript.

CNN: Muhammad blames toothache for lawyer switch