| 单词 | ammonium |
| 释义 | ammonium /euh moh"nee euhm/, n. Chem. the univalent ion, NH4+, or group, NH4, which plays the part of a metal in the salt formed when ammonia reacts with an acid. [ < NL; see AMMONIA, -IUM; coined by J. J. Berzelius in 1808] |
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