Felspar

例句:

• Obviously, at each step the percentage of felspar and phosphorus is less and less until in the final concentrates the percentage of iron oxide is 91 to 93 per cent. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The decomposed felspar of some varieties of granite yields the kaolin used in porcelain manufacture. 佚名. 神奇的知识之书.
• Granite quarried anywhere in which felspar predominates is not well adapted for buildings, as it cracks and crumbles down in a few years. 佚名. 神奇的知识之书.

欧内斯廷编辑