In the article we suppose that it is a better way to study bond's polarizability that the combination of infra-red spectrum data and polarizability equation calculates effective charge.

红外光谱数据与极化方程结合计算有效电荷的方法是研究键极化性质的较好途径。

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The next is that this variation has little to do with things you might suppose would explain it: class sizes, hours of study per subject, and spending per pupil.

ECONOMIST: Education and the wealth of nations