caesium-137
A radioactive isotope of caesium, ¹³⁷₅₅Cr, having 55 protons and 82 neutrons and which is formed mainly as a fission product by nuclear fission.
Alternative spelling of sensi
Objects, materials, or documents relating to H. P. Lovecraft (1890–1937), American author of fantasy, horror, and science fiction.
weary-legged.
実験室での測定により、原子炉近傍の土壌中に含まれる質量数137の放射性セシウム同位体の濃度が安全基準を上回っていることが示されました。
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