Empirical analyses show, the higher the share of city size distribution is, the higher the index of average agglomeration efficiency is.

本文的实证结果表明，平均集聚效率指数的高低与城市规模分布比重的增减相一致。

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The empirical results show that the volume of bonds issued each quarter is influenced by the average yield spread between high-and low-risk bonds.

实证研究结果表明，每季度债券发行量受到高，低风险的债券和债券平均收益率差的影响。

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Poulos-Davis-Randolph (PDR) Method is a empirical calculation method. It is easy to compute the relation between the number of piles and the average settlement of the foundation.

PDR法是计算沉降控制复合桩基的一种经验方法，它在一定程度上考虑了桩的非线性和桩—土—筏的共同作用。

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