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理学
放射性元素
释
dubnium
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人工放射性元素,元素符号Db,原子序数105,半衰期最长的同位素的质量数268。属周期系ⅤB族。以俄罗斯杜布纳联合核子研究所所在地杜布纳(Dubna)命名。
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subdivision by analogy
subdivision chain
subdivision chain mapping
subdivision for curves and surfaces
subdivision of a complex
subdivision of a graph
subdivision of categories
subdivision of land
subdivision of potential
subdivision of the current
subdivision regulations
subdivision ring
subdivision surface
subdivision surfaces
sub-DLAs
subdomain
subdomain method
subdominant
subducting plate,descending plate,underthrusting plate
subduction and subduction zone
subduction boundaries
Subduction Factory
subduction factory
subduction roll-back
subduction zone consuming boundary zone
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