调查结果

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。

cross-sectional survey【统计】

survey study

survey feedback

longitudinal survey

household interview survey

survey

gating missile (survey control missile)

mass stomach survey table