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helium
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helium
Encyclopedia
理学
氦
释
helium
氦
化学元素,元素符号He,原子序数2,原子量4.002602(2),属周期系零族元素,稀有气体。
Physics
helium
氦
2He
{化}
Astronomy
helium
缩写:He。氦
Chemistry
>无机化学>无机化学基本概念与无机化合物>释义
helium
氦
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conformal mapping theorem
conformal mapping theory
conformal map projection
conformal martingale
conformal measure
conformal metric
conformal net
conformal Newtonian gauge
conformal plane
conformal projection
conformal projection chart
conformal property
conformal radius
conformal representation
conformal solution theory
conformal space
conformal structure
conformal symmetry
conformal tensor
conformal time
conformal torsion
conformal transformation
conformal transformation group
conformal transformation method
Conformal Transformation Optics
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