Insert tooth bit applies in every serious geography especially hard rock; it has stable drilling speed and can drill the hardness of rock at 1-6 grades.
镶齿牙轮钻头主要适用于地质较硬的岩层，它钻进速度稳定，可以钻进1-6级地质硬度，适用于各种恶劣的地质环境。
The geometric configuration, moving conditions and force conditions of the tooth surface and the process of rock disintegration must be studied in designing the cutting structure.
欲设计合理的齿面结构必须研究齿面的几何形状、运动状态、受力状态和岩石破碎过程。
Do you throw it on top of a house? Do you bury it under a rock? Or do you hide it and hope for a visit from the tooth fairy?
是把它扔在房子的顶端、埋在岩石下面、还是把它藏起来并祈求牙仙的拜访？
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