a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
双语例句
用作名词 (n.)
There is a protective coating of silicon dioxide on the silicon carbide. 在棒的表面有一层二氧化硅保护涂层。
Silicon, naturally occurring in the form of silica and silicates, is the most important semiconductor for the electronics industry. 在自然界从硅酸盐和二氧化硅形式存在的硅是电子工业中最重要的半导体原材料。
