椭圆积分 tuǒ yuán jī fēn

DEFINITIONS

  1. (math.) elliptic integral

CHARACTERS

椭 tuǒ
HSK 6
oval-shaped, elliptical, tubular
圆 yuán
HSK 5
circle; round, circular; complete
积 jī
HSK 4
accumulate, store up, amass
分 fēn
HSK 1
divide; small unit of time etc.