This is jet bit and that is a PDC bit.
这是喷射式钻头，那是人造聚晶金钢石钻头。
machine set bit
机镶细粒金刚石钻头
diamod-enhanced hammer bit
金刚石镶齿震击钻头
diamond-particle bit
潜铸型细粒金刚石钻头
insert polycrystalline diamond bit
聚晶金刚石镶齿钻头
insert natural diamond bit
天然金刚石镶齿钻头
diamond content
钻头上金刚石的克拉数
polycrystalline diamond compact bit
聚晶金刚石复合片钻头
polycrystalline diamond compound bit
多晶金刚石复合钻头
Comparative analysis of drilling characteristics of dia- mond bits and roller bits
金刚石钻头与牙轮钻头钻井特点对比分析
Study on Carbide Drill Used to Drill ZGMn13 Turnout;
钻削ZGMn13高锰钢道岔硬质合金钻头研究
A form of opaque or dark-colored diamond used for drills.
墨金刚石一种不透明的或深色的钻石，用作钻（头）
Chip Removal Regularity and Bit Face Shape Selection in Impregnated Diamond Bit Drilling
孕镶金刚石钻头的排屑规律与钻头唇状选择
Seamless steel tubes standard use diamond core drilling
GB3423-1982金刚石岩心钻探用无缝钢管
STUDY ON THE NEW METHOD OF DRILLING CONTROL OF IMPREGNATED DIAMOND BIT
孕镶金刚石钻头钻进控制新方法的研究
Research on Bionic Coupling Diamond Coring Bits in Drilling Hard Rock
硬岩钻进用仿生耦合金刚石取心钻头研究
Researches on drilling CFRP(carbon fiber reinforced plastics) with diamond electroplated drill bit
电镀金刚石钻头钻削碳纤维复合材料研究
Study on matrix performance of iron-based diamond bit and drilling tests
热压铁基金刚石钻头胎体性能及钻进试验研究