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.
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