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seaborgium
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seaborgium
Encyclopedia
理学
放射性元素
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seaborgium
𬭳
人工放射性元素,元素符号Sg,原子序数106,半衰期最长的同位素的质量数271。属周期系ⅥB族。以著名化学家G.T.西博格[注]的名字而命名。
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traffic organization for work zone
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traffic problem
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traffic restriction in regular areas
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