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污染严重. 做不了什么. 找到几本书 污染方面的英文书. 希望普及知识有用.

X射线衍射仪(XRD)

  • PM2.5—Particulate matter below 2.5 um. This is closer to, but slightly finer than, the definitions of respirable dust that have been used for many years in industrial hygiene to identify dusts which will penetrate the lungs.
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  • 荆棘鸟fiona

    第1楼2015/12/25

    雾霾啥时候是个头啊

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