Unverified50% confidenceFactExact time
PM2.5 refers to particulate matter with an aerodynamic diameter of less than 2.5 micrometers, while ultrafine particles (UFP) have a diameter of less than 0.1 micrometers.
1
Sources
50%
Confidence
Long-term
Relevance
8/11/2026
First Seen
Sources
改用电磁炉可大幅削减室内空气污染
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