valance electron造句
造句与例句
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- Water also has a neutral pH . These are just some of the roles it plays, as to why it has the properties it does is because the arangement of the valance electrons in the atoms that water is composed of and the way those elements bond to one another .-- talk ) 02 : 35, 22 August 2010 ( UTC)
- It's difficult to see valance electron in a sentence. 用valance electron造句挺难的
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