石油化学 shí yóu huà xué

DEFINITIONS

  1. petrochemistry

CHARACTERS

石 shí
HSK 5
stone, rock, mineral; rad. 112
油 yóu
HSK 4
oil, fat, grease, lard; paints
化 huà
HSK 3
change, convert, reform; -ize
学 xué
HSK 1
learning, knowledge; school