细颗粒物 xì kē lì wù

DEFINITIONS

  1. fine particle (PM 2.5)
  2. fine particulate matter (air pollution etc)

CHARACTERS

细 xì
HSK 4
fine, tiny; slender, thin
颗 kē
HSK 5
grain, kernel
粒 lì
HSK 6
grain; small particle
物 wù
HSK 3
thing, substance, creature