单词	pyrogallol
释义	pyrogallol /ˌpʌɪrə(ʊ)ˈɡalɒl / noun [mass noun] Chemistry A weakly acid crystalline compound chiefly used as a developer in photography. Also called pyrogallic acid. Alternative name: 1,3,5-trihydroxybenzene; chemical formula: C6H3(OH)3. Catechol and pyrogallol may be substituted for hydroquinone, but are not as suitable.... Because of the tanning effect of catechol on emulsion gelatine, it has many of the properties of pyrogallol. One unit of activity was determined as the amount of enzyme that inhibited the oxidation of pyrogallol by 50%.
随便看	do someone up do someone wrong do something for one's country (or England etc.) do something in do something (or nothing) for do something out do something over do something to death do something until (or till) one is blue in the face do something up Dos Passos, John doss dossal dosser dosseret dosshouse dossier dost Dostoevsky, Fyodor Dostoyevsky dos-à-dos dot dotage dotard dot-bomb

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