钻头通常属于刮刀型，装备有PDC或者天然金刚石切削齿，但取芯钻头的特别之处在于钻头中心有一孔。
The bit is usually a drag bit fitted with either PDC or natural diamond cutting structures, but the core bit is unusual in that it has a hole in its center.
未来，金刚石轴承将会广泛应用于石油、天然气的钻探工具设备，以及利用流能或潮汐能涡轮发电的设备当中。
The future, will be widely used in diamond bearing oil and gas drilling tools and equipment, and the use of energy or tidal stream turbine power generation equipment which.
氧化(化合)—还原(分解)的论点，不仅解释天然金刚石的生成，也可解释静压合成、气相法等多种方法中金刚石的转化机理。
The view point of oxidation (composing) and reduction (decomposing) can not only explain the creation of natural diamond but also diamond conversion mechanisms such static synthesis CVD method etc.
钻石模具：天然金刚石模、聚晶模、进口聚晶模；并生产与之相匹配的各种型号拔丝粉。
Diamond Die: Natural Diamond Die, Die polycrystalline, imports polycrystalline module, and to match production with the various models of Roberts powder.
本文介绍了天然金刚石、天然刚玉、石榴石、石英、燧石、浮岩、硅藻土、赤铁矿、珍珠岩等天然磨料的性能特点和其应用。
This paper discusses the performance and application of natural abrasive such as diamond, corundum, garnet, quartz, flint, pumice, diatomite, hematite and perlite.
对天然金刚石、人造金刚石单晶及人造金刚石聚晶的性质、特点以及在现代精密加工中的应用作了比较。
Analyses the quality and characteristic of the savageness diamond, synthetic diamond and PCD, compares the applications in the present exactitude machining.
辽宁省的铁、菱镁石、金刚石、硼储量位列中国各大省市之首，它同时也是天然气和石油的重要产地之一。
Liaoning has the most iron, magnesite, diamond, and boron deposits among all province-level subdivisions of China. Liaoning is also an important source of petroleum and natural gas.
结果表明，在天然金刚石中存在类质同象置换现象，其振动光谱特征随置换元素的不同而不同。
The results show that isomorphous substitution occur in the diamonds and the vibrational spectra characteristics of the diamonds depend on the substitution of different elements.
结果表明，在天然金刚石中存在类质同象置换现象，其振动光谱特征随置换元素的不同而不同。
The results show that isomorphous substitution occur in the diamonds and the vibrational spectra characteristics of the diamonds depend on the substitution of different elements.
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