| 单词 | alkaline earth |
| 释义 | alkaline earth (once / 145918 pages) n WORD FAMILY alkaline earth: alkaline earths USAGE EXAMPLESIt is difficult to see what the chemical similarity between helium and alkaline earth metals is, however. Scientific American(Sep 21, 2013) Optical lattice clocks with alkaline earth atoms provide one of the most stable time-keeping systems. Science Magazine(Aug 09, 2013) Specifically, I look at novel catalytic transformations using the cheap and environmentally friendly metals of group 2 alkaline earth metals such as magnesium. Scientific American(Jun 21, 2013) n any of the bivalent metals of group II of the periodic table (calcium or strontium or barium or magnesium or beryllium) Syn|Hyper alkaline-earth metal metal, metallic element any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
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