It is a new technical innovation which the basic movement principles of the cone bit combine with the super wear-resistant diamond cutter.
它是将牙轮钻头切削齿交替工作的基本运动原理与金刚石钻头的超强耐磨切削齿技术相结合的一项技术创新。
It is a new technical innovation which the basic movement principles of the cone bit combine with the super wear-resistant diamond cutter.
它是将牙轮钻头切削齿交替工作的基本运动原理与金刚石钻头的超强耐磨切削齿技术相结合的一项技术创新。
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