| 单词 | alkaline earth element |
| 释义 | alkaline earth element in British English (ˈælkəˌlaɪn ɜːθ ˈɛlɪmənt) noun chemistry any of the divalent electropositive metals beryllium, magnesium, calcium, strontium, barium, and radium, belonging to group 2A of the periodic table another name for alkaline earth (sense 1) |
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