| 释义 |
tet·ra·valence
\|te.trə+\ noun
or tet·ra·valency \“+\
Etymology: tetravalence International Scientific Vocabulary, from tetravalent, after such pairs as English present : presence; tetravalency from tetravalent, after such pairs as English president : presidency
: the quality or state of being tetravalent
< the tetravalence of the carbon atom > |