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单词
r acid
释义
r acid
noun
Usage:
usually capitalized R
:
a crystalline sulfonic acid HOC
10
H
5
(SO
3
H)
2
derived from beta naphthol and used as a dye intermediate; 2-naphthol-3,6-disulfonic acid
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更新时间:2025/7/10 0:36:16