Detailed Notes on 銀座白石
The surface area of diamonds is partially oxidized. The oxidized area can be lessened by warmth treatment method beneath hydrogen movement. That is certainly to mention, this heat treatment partly removes oxygen-that contains practical groups.鋸 · 磨 · 焊 · 鍛 · 拋 · 鑲 · 鍍 · 失蠟法 · 鑄造 · 浸滲 · 氧化