The synthesis of millimetre-sized phase-pure hexagonal diamond, a polymorph of cubic diamond, by compressing highly oriented pyrolytic graphite under high pressures and temperatures is reported, providing new insight into the graphite-to-diamond transformation pathway.
Трамп допустил ужесточение торговых соглашений с другими странами20:46
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France vs. England — 8:10 p.m. GMT on March 14 (ITV)，详情可参考下载安装汽水音乐
Венесуэла подписала новые контракты на поставку нефти США08:58