The outer ring contains the valence electrons.

排在外层的有价电子.

辞典例句

Two shared valence electrons forming a bond between adjacent nuclei.

形成电子核子之间的键的两个共享原子价电子.

互联网

This a chemical bond that results from the sharing of valence electrons between atoms.

一种是共价键,是由原子间共享价电子形成.

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