carbeneWiktionary 原文/ˈkɑr.bin/释义名词noun1(organic chemistry) Any short-lived, reactive species R2C:, especially the parent compound CH2: (also called methylene).同族词派生词 12carbenoid·dicarbene·dichlorocarbene·metallocarbene·monocarbene·nitrene·polycarbene·silicene·tetracarbene