质子轰击 zhì zǐ hōng jī

DEFINITIONS

  1. proton bombardment

CHARACTERS

质 zhì
HSK 4
matter, material, substance
子 zǐ
HSK 1
offspring, child; fruit, seed of; 1st terrestrial branch
轰 hōng
HSK 6
rumble, explosion, blast
击 jī
HSK 5
strike, hit, beat; attack, fight