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放射性元素
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nihonium
人工放射性元素,元素符号Nh,原子序数113,半衰期最长的同位素的质量数286。属于周期系ⅢA族。以日本理化学研究所所属国的国名日语发音命名。曾被称为113号元素(ununtrium),符号Uut。
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Office for Biosafety Administration of Agricultural Genetically Modified Organisms of Ministry of Agriculture and Rural Affairs of China
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office for the state council leading group for the development of western regions of China
office for the state council leading group to revitalize the northeast and other old industrial bases of China
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office of building estimate
office of leading group for the development of the Guangdong-Hong Kong-Macao greater bay area of China
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office of revising medical books of the Song dynasty
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