rectangular core

Coupling characteristics of dual-core rectangular lattice photonic crystal fibers are analyzed by the plane-wave expansion method.

讨论了矩形结构光子晶体光纤的制作方法,并提出一种采用堆积 - 拉制法实现这种光纤结构的方法.

According to the bound failure condition of the rectangular cross section, the limit value of axial compres-sive ratio for concrete frame columns is analyzed concerning with the factor of longitudinal reinforcement, composite stirrups and core reinforcement etc.

导并计算了混凝土柱截面在界限破坏条件下的轴压比，讨论了箍筋约束、周边纵向钢筋、芯筋和其他因素对柱轴压比限值的有利影响。

In this paper, fundamental equations and boundary conditions of the nonlinear bending theory for a rectangular sandwich plate with a soft core are derived by means of the method of calculus of variations.

本文应用变分法导出了具有软夹心的夹层矩形板的非线性弯曲理论的基本方程和边界条件。