Example: bachelor of science
Pm2 5
Found 2 free book(s)
Chapter 7.3 Particulate matter - World Health Organization
www.euro.who.intPM2.5 and PM10 in Berlin, Germany and at a rural control site. The average PM2.5 concentration was 39 µg/m3, the average PM10 concentration was 58 µg/m3. For the fine fraction, 78% was found to consist of the same components as in the California study, while for the coarse fraction, the proportion was 50%.
不織布マスクの 性能と使用時の注意
www.shanghai.cn.emb-japan.go.jpPM2・5対策、花粉対策 医療用マスク サージカルマスク（手術用） マスクの分類と種類 N95マスクなど 防塵規格マスク（呼吸保護具） N95マスク（米国、NIOSHの認定） DS1、DS2規格マスク（日本の労働安全衛生 法に基づく国家検定に合格）