二次扬尘 meaning in Chinese

reentrainment of dust

The survey result made by hengshui environment survey station shows that the air pollution in hengshui in recent years is mainly due to coal fume and second - time dust and the water pollution is very serious and noise pollution is far beyond the standard
摘要据衡水市环境监测站监测结果表明：近几年衡水市空气污染主要属于煤烟和二次扬尘混合型污染；水质污染严重，噪声污染严重超标。