*有机化合物分子中的化学键主要是共价键* 价电子层?Valence shell (价电子层):The electrons that surround the nucleus exist in shells of increasing energy and at increasing distances fro...
2
?价层
有一个真棒的一天 valence shell ? 价层 scissor, ? 剪刀, ..
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?壳价
...either is the man interested in rock,nor he is fond of jazz ? 既是岩石,有兴趣的人,他是喜欢爵士乐 valence shell ? 壳价 ..