And it analyzed that hob tooth height and tooth top pour round radius impacted on gear tooth root crooked stress.

分析了滚刀齿高和齿顶倒圆半径对所切齿轮齿根弯曲应力的影响。

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According to the normal design method the former involute spline gear shaper cutter often has different size of its tooth top and tooth root.

按常规方法设计的大压力角渐开线花键插齿刀，常出现刀具齿顶宽太小和齿根槽太窄的问题。

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Use your thumbs and forefingers to gently pull the floss from the gumline to the top of the tooth to scrape off plaque.

用拇指和食指沿着齿龈向牙冠方向缓和地拉扯牙线，以去除牙菌斑。

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Chronologically, Apple is long in the tooth at the top of the heap.

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You should always introduce the floss at the top of the tooth, in the gum line, and bring it down, then remove it and find an unused length for the next tooth.

WSJ: How to Be a Better Flosser

Investment banks fight tooth and nail to get placement in the top line of the listing, and then poke eyes out to be placed on the left.

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