The connect form of cutting tooth and cutting header is welding, welding technics is complex.

掘进机的截齿与截割头的连接采用焊接形式，焊接工艺比较复杂。

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According to the result of interference test, the cutting tooth parameter is adjusted till the satisfied spiral bevel gear pair was acquired.

根据干涉结果对螺旋锥齿轮的切齿参数进行调节，直至得到比较满意的螺旋锥齿轮副。

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Then, According to the cutting tooth processing principle, establish hypoid gear model, and conduct virtual assembly, interference checking, provides the precise model for the following analysis.

再根据切齿加工原理，建立了准双曲面齿轮模型，并进行虚拟装配，干涉检查，为后面分析提供精确的模型。

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An ingenious new laser called Waterlase adds to that the ability to cut through dry teeth and bone by casting a cloud of hot water vapor around the laser's cutting point, a couple of millimeters from the tooth.

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And it's exciting to see the leaders of some of the most innovative, cutting-edge, tech-savvy companies in the world gathered in the city where I had to fight tooth and nail just to get a BlackBerry. (Laughter.) There may be a little bit of a cultural clash here, but that's exactly why we want you here.

WHITEHOUSE: Forum on Modernizing Government: Opening Session