突变理论 tū biàn lǐ lùn

DEFINITIONS

  1. (math.) catastrophe theory

CHARACTERS

突 tū
HSK 3
suddenly, abruptly, unexpectedly
变 biàn
HSK 3
change, transform, alter; rebel
理 lǐ
HSK 3
reason, logic; manage
论 lùn
HSK 4
debate; discuss; discourse