- 行业: Government
- Number of terms: 3992
- Number of blossaries: 2
- Company Profile:
Sources of pollution where the emissions are spread over a wide area, such as consumer products, fireplaces, road dust and farming operations. Area-wide sources do not include mobile sources or stationary sources.
Industry:Pollution control
所谓的“纯”空气是一种混合气体，它包含 78% 的氮气； 21% 的氧气；少于 1% 的二氧化碳、 氩气和气体气体；以及不同量的水蒸气。另请参见环境空气。
Industry:Pollution control
