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放射性元素
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promethium
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人工放射性元素,元素符号Pm,原子序数61,半衰期最长的同位素的质量数145.0,属周期系ⅢB族,镧系元素、稀土元素。由希腊神话中从天庭盗取火送到人间的英雄普罗米修斯(Prometheus)而命名。
Chemistry
>放射化学与辐射化学>放射性元素化学>释义
promethium
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bilateral derivative
bilateral distribution
bilateral family
bilateral implementation mechanism
bilateral investment promotion and protection agreement
bilateral Laplace transform
bilaterally bounded sequence
bilaterally invariant
bilateral maritime agreement
bilateral network
bilateral observation
Bi-lateral Resource Integration Service
bilateral series
bilateral shift operator
bilateral surface
bilateral symmetry
bilateral transfer
bilateral transformation
bilateral Z-transform
bilayer
bilayer graphene
bilayer graphene; double layer graphene
bilayer graphene; double-layer graphene
bilayer lipid membrane
bilayer structure
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