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alexz commented on the word PM2.5
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.htmlA 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
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