英日字典: atomic_number_20
The atomic_number_20 has 1 Senses.
- calcium, ca, atomic number 20
- Ca, Ca, カルシウム
- a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
- 明るい炎を上げて燃焼する白色の金属元素
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