同义词： alkaline-earth metal
以上来源于: WordNet
N any of the divalent electropositive metals beryllium, magnesium, calcium, strontium, barium, and radium, belonging to group 2A of the periodic table 碱土金属 (Also called alkaline earth metal, alkaline earth element)
The calculated results of energy gap on alkaline earth mixed halides are reasonable.
对碱土金属复卤化物的能隙进行了计算，结果合理。
The difference can be used to improve the separation between alkaline earth and transition metal ions.
这种差异可用于改善碱土金属与过渡金属离子之间的分离状况。
The latter which appeared in the tang dynasty is to decoct the brine extracted from the ash or alkaline earth in flat plates.
“煎盐”则指提取柴灰或碱土中的卤水，用浅而阔的盘熬干以制取盐，这一专称唐代始见。
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