natural diamond

基本解释

The diamond films coating has as high hardness, high wear resistance, low friction coefficient and high thermal conductivity as the natural diamond.
金刚石薄膜涂层具有与天然金刚石相同的优异特性：高硬度，低擦系数，高耐磨和高导热性能；
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.
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。
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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.
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 diamond-encrusted disc symbolizes the natural abundance of the Bunder diamond deposit.
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With larger, synthetic gem quality diamonds coming into the market, investments in larger, natural, high quality diamond will become more attractive than ever.
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Alpha Natural Resources ( ANR) and Diamond Offshore Drilling ( DO) make my short list of patterns to play should we see higher oil prices in the intermediate term.
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