carbynium
(chiefly clothing) Initialism of extra extra extra extra large (the manufactured size or an item of that size).
plural of PVR
plural of pycnon
(chemistry) The radical cation H₂C.+ or ony organic derivative of it
質量分析の実験で生成したメチレンラジカルカチオンは、隣接する置換基との共鳴により異常な安定性を示した。
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