单词	carbene
释义	carbene /ˈkɑːbiːn / noun Chemistry A highly reactive molecule containing a divalent carbon atom, examples of which occur as intermediates in some organic reactions.It is only in reactions with transition metals that carbenes are stable, due to the distribution of electrons within the structure formed.... So here we have the personal opinion of a professor in chemistry, famous for his work on carbenes, commenting on evolution and at the same time his title evolved into professor of biochemistry. This reaction has become synthetically useful since the discovery of various well-defined transition metal carbene complexes which can catalyse alkene metathesis.
随便看	pyelolithotomy pyelonephritic pyelonephritis pyeloplasty thymoma thymoxamine thymus thymus gland thymy thyristor thyro- thyroglobulin thyroid thyroid cartilage thyroidectomy thyroid gland thyroiditis thyroid-stimulating hormone thyrotoxicosis thyrotrophin thyrotropin thyrotropin-releasing factor thyrotropin-releasing hormone thyroxine thyrsus

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