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ＰＭ２．５

ぴーえむにてんご

[piiemunitengo]

Definitions

1.noun (common) (futsuumeishi)

PM 2.5; particulate matter 2.5; particles smaller than 2.5 micrometers

ＰＭ２．５ (ぴーえむにてんご) — Definition | NichiDict