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单词 phosphoric acid
释义 phosphoric acid
 Chem.
 any of three acids, orthophosphoric acid, H3PO4, metaphosphoric acid, HPO3, or pyrophosphoric acid, H4P2O7, derived from phosphorus pentoxide, P2O5, and various amounts of water.
 [1785-95]
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更新时间:2024/12/23 8:49:18