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.
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。搜狗输入法对此有专业解读
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Фото: Вячеслав Прокофьев / POOL / РИА Новости。体育直播是该领域的重要参考