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US5882786A Gemstones formed of silicon carbide with diamond coating 失效
宝石由碳化硅与金刚石涂层组成

Gemstones formed of silicon carbide with diamond coating
摘要:
Synthetic gemstones are produced by growing single crystals of silicon carbide, fashioning the silicon carbide into gemstone cores, and thereafter depositing a thin coating of diamond on the core.
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