共价键 /gòngjiàjiàn/ angolul

covalent bond [covalent bonds]▼(bond in which atoms are connected by shared pairs of electrons)
noun
[UK: ˌkəʊ.ˈveɪ.lənt bɒnd] [US: ˌkoʊ.ˈveɪ.lənt ˈbɑːnd]