原子越大，其外层电子受原子束缚力越弱，这是解释铅和锡两者差别的一部分原因。

This is partly explained because the bigger an atom is, the more weakly its outer electrons are bound to it (and hence the further those electrons are from the nucleus).

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采用改进的线性组合符和么正变换方法导出强、弱耦合束缚极化子的振动频率和有效质量。

The vibration frequency and effective mass of strong - and weak-coupling bound polaron was derived by using improved linear combination operator and unitary transformation methods.

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原子越大，其外层电子受原子束缚力越弱，这是解释铅和锡两者差别的一部分原因。

This is partly explained because the bigger an atom is, the more weakly its outer electrons are bound to it and hence the further those electrons are from the nucleus.

youdao