单词：substituents
(substituent 的复数) n. 取代基, 代替物
a. 取代基的, 代替物的
a. 取代基的, 代替物的
plural of substituent
n. Any atom, group, or radical substituted for another,
or entering a molecule in place of some other part which is removed.
n. Any atom, group, or radical substituted for another,
or entering a molecule in place of some other part which is removed.