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neptunium
释义
neptunium
Encyclopedia
理学
放射性元素
释
neptunium
镎
人工放射性元素,元素符号Np,原子序数93,半衰期最长的同位素的质量数237。属周期系ⅢB族,锕系元素。仿照以天王星命名铀的方法,以天王星外面的海王星(Neptune)命名镎。
Physics
neptunium
镎
93Np
Astronomy
neptunium
缩写:Np。镎
Chemistry
>放射化学与辐射化学>放射性元素化学>释义
neptunium
镎
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length of laminar jet flame
length of lay
length of life
length of normal
length of pendulum
length of perpendiculars
length of river
length of sampling
length of shot
length of sleeper
length of span
length of stemming
length of stroke
length of tangent
length of the chord
length of the period
length of the tropical year and length of the synodic month
length of Weyl reflection
length-preserving embedding
length-preserving mapping
length-preserving transformation
length scales in turbulence
length shot
length-variable code
length-volume principle
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