A method for damage positioning is developed on the basis of testing the variation ratio of squared frequency.

介绍了基于频率变化平方比的损伤定位方法。

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Moreover, the expansion ratio of scale factor and the variation ratio of string coupling constant are calculated.

另外，计算了标度因子的膨胀比和弦耦合常数的变化比。

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Moreover, the expansion ratio of scale factor and the variation ratio of string coupling constant are calculated.

另外，计算了标度因子的膨胀比和弦耦合常数的变化比。

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