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单词
iron alum
释义
iron alum
noun
1.
:
an alum containing iron as the trivalent constituent
;
especially
:
ammonium ferric alum NH
4
Fe(SO
4
)
2
.12H
2
O
2.
[
alum
(I)
(aluminum sulfate)]
:
halotrichite
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更新时间:2024/9/24 20:31:55