neon-21
短语释义与例句
n.
-
1.
A rare stable isotope of neon, 2110Ne, having ten protons and eleven neutrons; it amounts to less than 0.3% of the element in nature
不可数 物理
A rare stable isotope of neon, 2110Ne, having ten protons and eleven neutrons; it amounts to less than 0.3% of the element in nature