iron-54
(physics) A minor stable isotope of iron, ⁵⁴₂₆Fe, having 26 protons and 28 neutrons; it amounts to about 6% of the element in nature
The Pennsylvania German people who observe religious strictures to only wear plain clothes; often those belonging to Anabaptist groups.
(zoology) Any extinct mammal of the order Plesiadapiformes
plural of 600-cell
質量分析により、その隕石に質量数54の鉄同位体が微量含まれていることが確認された。
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