“helium”的概念、定义、翻译、参考文献-科学参考

单词	helium
释义	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
随便看	antenna element antenna elements antenna environment antenna error antenna feed antenna feeds antenna gain antenna graph antenna height antenna illumination antenna impedance antennal gland antenna marine monitoring monitor antenna matching antenna metrology antenna pattern antenna patterns antenna pattern solid angle antenna pedestal antenna phase center antenna phase center offset antenna phase center variation antenna power pattern antenna radiation patterns antennas

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