曲线梁的理论研究主要采用平衡法、能量法以及基于变分原理的虚功(位移)方法。
Theoretical studies of curved girders mainly adopted the methods of balanced method, energy method and variation-based method of virtual work (displacement).
根据日照百分率日变程曲线的变化规律，对于日照百分率大于70%的地区，建议了一种新的日照百分率计算式。
According to the daily change law from curves for percentage insolation, this paper presents a new formula of the average insolation in the zones where the insolation is more than 70%.
本文根据日照百分率年变程曲线类型，应用聚类分析方法，把全国划分为12个日照区。
By using the method of cluster analysis, the annual variation curve types of the sunshine percentage in China are divided into 12 divisions.
同时，为了进一步了解黑洞的物理过程，通过研究黑洞态以及其光变曲线的周期性变化一直以来是一种十分重要的方法。
Moreover, it is a very important method with study black hole states and the periodicity of the light curve to study their physical process.
同时，为了进一步了解黑洞的物理过程，通过研究黑洞态以及其光变曲线的周期性变化一直以来是一种十分重要的方法。
Moreover, it is a very important method with study black hole states and the periodicity of the light curve to study their physical process.
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