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理学
放射性元素
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meitnerium
人工放射性元素,元素符号Mt,原子序数109,半衰期最长的同位素的质量数278。属周期系Ⅷ族。为纪念核物理学家和放射化学家L.迈特纳[注]而命名。曾被称为109号元素(unnilennium),符号Une。
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leading-order analysis
Lead Ingot Storage Pit at Liujiazhuang
leading particle
leading peak
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leading phase operation of hydro-generator unit
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leading principal minor
leading role of state-owned economy
leading sectorpriority development strategy
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leading singularities
leading spot
leading strand
leading structure
leading submatrix
leading submodule
leading sunspot
leading term
leading term ideal
Lead in Guizhou
leading variable
leading wave
leading work group
leading zero
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