热中子 rè zhōng zǐ

DEFINITIONS

  1. thermal neutron

CHARACTERS

热 rè
HSK 1
hot; heat; fever; restless; zeal
中 zhōng
HSK 1
central; center, middle; in the midst of; hit (target); attain
子 zǐ
HSK 1
offspring, child; fruit, seed of; 1st terrestrial branch