Difference between revisions of "CIIC:Today's featured article/May25, 2012"
From Wiki China org cn
imported>Ciic |
imported>Ciic |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
| − | [[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...)
