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；
Appropriate fluoride exposure and usage is beneficial to bone and tooth integrity and, as such, has an important, positive impact on oral health as well as general health throughout life.
适当的氟化物曝光和使用是有益的骨骼和牙齿的完整性，因此，具有对口腔健康的一个重要的，积极的影响，以及一般健康整个生命。
In the process of the teeth, hob manufacturing error of gear tooth shape of the main impact error and the festival deviation.
在切齿过程中﹐滚刀的制造误差主要影响齿轮的齿形误差和基节偏差。
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