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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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coal tar hydrogenation
coal tar of low temperature
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coal-tar pitch
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coaltitude
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coal-to-liquids technology
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