Heating husks to 800 degrees centigrade (1,472 degrees Fahrenheit) in an oxygen-free furnace drives off carbon, leaving fine particles of nearly pure silica behind.
在无氧炉中将糠皮加热到800摄氏度(1472华氏度)将分离糠皮中的碳，留下几乎只含有硅的细小微粒。
2
Heating husks to 800 degrees centigrade (1, 472 degrees Fahrenheit) in an oxygen-free furnace drives off carbon, leaving fine particles of nearly pure silica behind.
在无氧炉中将糠皮加热到800摄氏度(1472华氏度)将分离糠皮中的碳，留下几乎只含有硅的细小微粒。
3
A method for chemical phase analysis of freesilica in limestone was discussed in this paper.