【纺织；造纸】酸、溶液/溶解

uncharged polar amino acid【生化】

π-acid

excitatory amino acid

hydroxy-L-proline; 4-hydroxy-2-pyrrolidine-carboxylic acid

ASCORBIC ACID ( V.C. )

ORTHO AMINO PHENOL SULPHONIC ACID

heptenoic acid

pyrophosphorous acid