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1·In this paper we study the structure of panda fibers how to effect the birefringence (beat length) by an infinitesimal element method.

本文用微元算法研究了熊猫光纤的结构参量对熊猫光纤双折射特性(拍长)的影响。

2·In this paper, we study theoretically infinitesimal element method for calculation of stress birefringence in polarization maintaining fibers.

本文研究了计算保偏光纤中应力双折射特性的微元算法，对其计算值进行了理论验证。

3·These are known as the nine components of stress and are illustrated with reference to an infinitesimal rectangular element about a point in figure1.2.

它们被称为应力的九个分量，均示于图1。2中一点附近的无限小的平行六面体单元上。

4·These are known as the nine components of stress and are illustrated with reference to an infinitesimal rectangular element about a point in Figure 1. 2.

它们被称为应力的九个分量，均示于图1.2中一点附近的无限小的平行六面体单元上。