积分变换 jī fēn biàn huàn

DEFINITIONS

  1. integral transform (math.)

CHARACTERS

积 jī
HSK 4
accumulate, store up, amass
分 fēn
HSK 1
divide; small unit of time etc.
变 biàn
HSK 3
change, transform, alter; rebel
换 huàn
HSK 3
change