Industrialwastegas is hereby classified into three categories that are Sulfur dioxide, smoke and dusts.
工业废气按物质分为三种：二氧化硫、烟尘、粉尘。
2
This paper abstractly describes the fluorine emission and the control state of industrialwastegas recent years in China.
文章概要叙述我国近年工业废气的氟排放和治理状况。
3
The industrialwastegas purifying apparatus may be used to eliminate atomized matter and dust in industrialwastegas and is simple in structure and convenient in use.