天体力学 tiān tǐ lì xué

DEFINITIONS

  1. celestial mechanics

CHARACTERS

天 tiān
HSK 1
sky, heaven; god, celestial
体 tǐ
HSK 2
body; group, class, body, unit; inferior
力 lì
HSK 3
power, capability, influence
学 xué
HSK 1
learning, knowledge; school