价键 jiàjiàn valence bond Definitions Defs Origin Strokes Stroke Words Sentences Sents 1 sentence 这种分子结构中含有一个共价键。 zhè zhǒng fēnzǐ jiégòu zhōng hányǒu yī gè gòng jià jiàn. This molecular structure contains a covalent bond. Source: Dong Chinese Dictionary