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  • Air pollution term added to the Chinese Dictionary

    "PM2.5 stands for particulate matter with diameter less than 2.5 microns." - http://www.metrohm-applikon.com/news/PM2.5.html

    A lot of the tweet examples show 【pm2.5】

    The Chinese usage seems to be lower case, and numbers in "μg/m3" micrograms per cubic meters.

    April 27, 2015