But the current differential settlement control criterion of bridge-approach, the existing calculation models and methods of bridge-approach pavements could not describe and explain.
而现有的路桥过渡段段差异沉降控制标准与交通荷载下路桥过渡段路面的计算模型和计算方法，不能对桥头跳车问题进行全面描述和合理解释。
The article describes these models and calculation methods.
本文概括地介绍了这些计算模型和方法。
This paper summarises the main ecological theories on pasture plant competition, and relevant plant competition models and competition coefficient calculation methods are analyzed.
对草地植物竞争的主要生态学理论及目前常见的植物竞争模型和竞争系数的计算方法进行了总结分析。
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