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单词
pyrophosphoric acid
释义
py·ro·phos·phor·ic acid
(p
ī
′
r
ō
-f
ŏ
s-fôr
ĭ
k)
n.
A glacial or syrupy viscous liquid, H
4
P
2
O
7
, used as a catalyst and in organic chemical manufacture.
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belt highway
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Belukha
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Ben
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更新时间:2025/11/1 16:07:06