To investigate the pollution levels of air particulate matter in Baoshan district in ordor toprovide the reference for establishment of standard for PM2.5 and pollution prevention.
了解上海市宝山区空气中颗粒物PM10和PM2.5的污染水平，为PM2.5污染防治提供参考。
参考来源 - 上海市宝山区空气中PM·2,447,543篇论文数据，部分数据来源于NoteExpress
Located in Baoshan District Shanghai with total floor area of about 7,541square meters. A multi-purpose teaching building.
位于上海市宝山区，总建筑面积约7,541平方米。为一栋教学综合楼。
To learn the lead hazards in factories and enterprises of Baoshan District of Shanghai and prevent the occurrence of lead poisoning.
目的了解上海宝山区工厂企业铅职业病危害状况，预防和控制职业中毒的发生。
Stratified sampling method was applied to investigate immunization status of ecdemic children and its affecting factors in Baoshan District.
方法采用分层抽样方法对本区外来流动儿童免疫接种现状及其影响因素进行流行病学调查。
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