Respiratory dust content in air I creases with raising of dustconcentration.
说明空气中呼吸性粉尘的含量随着粉尘浓度的增高而增加。
2
The dustconcentration distribution on the electric field section in ESP is not uniform, this is one of reasons to produce secondary blowing dust.
电除尘器内电场断面烟尘浓度呈非均匀性分布，它是产生振打二次扬尘的重要原因之一。
3
After dust mobilization in the desert in Northwest of China, dust was forced to transport to Southeast. Dustconcentration was reduced while transportation.