+13 = 24

ㄐㄧㄢˇjiǎn

ㄐㄧㄢˇjiǎn
(chemistry)​ base; alkali; soda
Alkali (S, Chem)​, Base (S, Chem)​, Bettrost, Etappe (S)​, kohlensaures Natron, Natriumcarbonat (S, Chem)​
base (chimie)​, alcali