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The surface of diamonds is partly oxidized. The oxidized floor could be decreased by heat cure beneath hydrogen move. That may be to convey, this warmth cure partly eliminates oxygen-containing functional groups.鋸 · 磨 · 焊 · 鍛 · 拋 · 鑲 · 鍍 · 失蠟法 · 鑄造 · 浸滲 · 氧化 · 雕版In the event you’d so