| 释义 |
calcium group cal·ci·um group (kal'sē-ŭm grūp), The metals of the alkaline earths: beryllium, magnesium, calcium, strontium, barium, and radium.cal·ci·um group (kal'sē-ŭm grūp) The metals of the alkaline earths: beryllium, magnesium, calcium, strontium, barium, and radium. |