放热反应 fàng rè fǎn yìng

DEFINITIONS

  1. exothermic reaction

CHARACTERS

放 fàng
HSK 3
put, release, free, liberate
热 rè
HSK 1
hot; heat; fever; restless; zeal
反 fǎn
HSK 4
reverse, opposite, contrary, anti
应 yìng
HSK 3
should, ought to, must