透射电镜(TEM)和高分辨电镜(HREM)分析表明，所制备的纳米晶金刚石为立方金刚石和六方金刚石晶体。
Transmission electron microscopy (TEM) and high resolution electron microscopy (HREM) indicate that nano crystalline diamonds have hexagonal lattice and cubic lattice.
除常见的立方金刚石结构外，还存在一种罕见的六方金刚石结构。它们通常共存在一个金刚石织构体中，形成共生晶体。
They are made up from both of cubic and hexagonal diamond crystal structures, which are called a sort of intergrowth crystals.
在高温高压下，六方晶格的石墨转变为立方晶格的金刚石。
Under the high temperature and high pressure, the hexagonal graphite crystals can change into the tetragonal diamond crystals.
采用第一性原理研究了B2CN晶体可能的六方结构和异质金刚石结构；
The possible B2CN crystal structures with hexagonal and heterodiamond structures were studied by first principles calculation.
采用第一性原理研究了B2CN晶体可能的六方结构和异质金刚石结构；
The possible B2CN crystal structures with hexagonal and heterodiamond structures were studied by first principles calculation.
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