渣油
/ˈlɒŋ ˈɹeɪdɪəl ɛkstˈɛnsəɹ ɒv ˈɹɪst/
n
English: long residue · 渣油
释义：Residue made up of heavy nonvaporized fractions; it accumulates at the base of the fractionating tower after the hydrocarbons have been separated.
English: long residue · 渣油