變分原理 biàn fēn yuán lǐ

DEFINITIONS

  1. variational principle (physics)

CHARACTERS

變 biàn change, transform, alter; rebel
分 fēn
HSK 1
divide; small unit of time etc.
原 yuán
HSK 4
source, origin, beginning
理 lǐ
HSK 3
reason, logic; manage