chromium-54
Sevenfold; made up of seven parts.
simple past tense and past participle of rescind
(physics) A minor stable isotope of chromium, ⁵⁴₂₄Cr, having 24 protons and 30 neutrons; it amounts to about 2% of the element in nature
(Northern England, Scotland, transitive) To shelter; to protect. / (Northern England, Scotland, intransitive) To hide; to take shelter.
隕石中に質量数54のクロム同位体が含まれていることが、初期太陽系の過程に関する手がかりを提供した。
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