Difference between revisions of "CIIC:Today's featured article/May25, 2012"
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imported>Ciic (Created page with 'thumb|250px|left|Lin Dan (林丹) '''Lin Dan''' ('''林丹''') is a world champion player on China's national badminton team. He is the reigning ...') |
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| − | [[file: | + | [[file: PM.JPEG|thumb|250px|left|The smog in Beijing]] |
| − | ''' | + | Particulate matter, or PM, is the term for particles found in the air, including dust, dirt, soot, smoke, and liquid droplets. '''PM2.5''' particles are air pollutants with a diameter of 2.5 micrometers or less, small enough to invade even the smallest airways. [[PM2.5|(More...)]] |
Latest revision as of 06:03, 25 May 2012
Particulate matter, or PM, is the term for particles found in the air, including dust, dirt, soot, smoke, and liquid droplets. PM2.5 particles are air pollutants with a diameter of 2.5 micrometers or less, small enough to invade even the smallest airways. (More...)
.JPEG){kind=link}