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PM2.5
細顆粒物細顆粒物又稱細粒、細顆粒、PM2.5。細顆粒物指環(huán)境空氣中空氣動力學(xué)當量直徑小于等于2.5微米的顆粒物。它能較長時間懸浮于空氣中,其在空氣中含量濃度越高,就代表空氣污染越嚴...
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