Beijing pollution index You can use this small software to view the status of Beijing's fine...
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Beijing pollution index Ranking & Summary

Beijing pollution index Tags

Beijing pollution index Description

You can use this small software to view the status of Beijing's fine particles(Pm2.5).Particles less than 2.5 micrometers in diameter are called "fine" particles. These particles are so small they can be detected only with an electron microscope. Sources of fine particles include all types of combustion.

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