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Finally, it is concluded that the right-angled roof prism should be used instead of the corner-cube prism.

最后得出可以用直角屋脊棱镜代替立方角锥棱镜的结论。

This dissertation applies 3-D finite element theory to development of the shape functions and stiffness matrixes of the triangular prism isoparameter elements (6 to 15 nodes). A calculating method for Gaussian integral in triangular prism is presented.

本文应用三维有限元理论，构造了一类五面体6～15节点单元的形函数，提出了在五面体单元内的Gauss积分处理方法，建立了相应的单元刚度矩阵，将其与六面体8～21节点单元结合，可用于计算焊接钢结构的应力场。

Date models basing on triangular prism were adopted in programs. Incising of triangular prism was investigated. 5. The geotechnical section in Xiamen seabed tunnel was simulated using compiled three-dimensional visualization programs.

采用Visual C++的面向对象语言编程方法设计了一个关于地下结构虚拟开挖的计算分析软件，软件采用基于三棱柱的数据模型，探讨了三棱柱切割的方式。

In order to obtain symmetry and parallel polarized light,the double Wollaston prism is amended. After getting symmetric polarized light at a big splitting beam angle,an ordinary triangular prism is added so that the symmetric light beam can be divided into parallel light beams.

为了获得对称且平行分束的偏振光，对双Wollaston棱镜进行了修正，在获得大分束角的对称偏振光后，配合普通玻璃三棱镜，使对称分束光变成平行分束光，通过改变三棱镜与双Wollaston棱镜间的距离来改变平行光的剪切距离。

In fifth chapter, we analyse the splitting angle of Rochon prism and Wollaston prism.

第五章分析了洛匈棱镜和渥拉斯顿棱镜两种典型的偏关分束棱镜的分束角。

Based on the structure of Wollaston prism, a new design of symmetric beam splitting prism is given. From reforming the end surface of o light, we can get symmetric beam splitting.

基于Wollaston棱镜的结构，给出了对称分束偏光棱镜的一种新的设计，即通过修正 o 光束的出射端面来实现对称分束。

Based on the structure of Wollaston prism, a new design of symmetric beam splitting prism is given. From reforming the emergent end surface, we can get symmetric beam splitting.

基于Wollaston棱镜的结构，给出了对称分束偏光棱镜的一种新的设计，即通过修正光束的出射端面来实现对称分束。

In order to study the effect of Wollaston prism on the intensity of single-mode Gaussian beam,the transmitting o light and e light were studied respectively by analyzing interference in the prism cementing layer.

为了研究Wollaston棱镜对单模高斯光束光强分布的影响，采用分析光在棱镜胶合层中干涉效应的方法，对透射o光和e光分别进行了分析。

The antireflection thin film can reduce the reflectance of the end surface of the Wollaston prism ,which can enhance the transmissivity of the prism.

为了减小沃拉斯顿棱镜端面反射以提高棱镜的透过率，研究了沃拉斯顿棱镜增透膜的设计和蒸镀工艺。

Ten patients with homonymous hemianopia received a 30-diopter fresnel plastic paste-on prism on their glasses. The prism was pasted base out toward the side of their hemianopia and on one lens only. A small 1 to 2 mm portion was cut out of the center to prevent diplopia.

利用一30稜镜度之Fresnel稜镜贴在同侧性半盲病人的眼镜上，稜镜的基底部置於半盲侧，只须贴一眼，譬如右侧半盲病人贴右眼的颞半侧，中心部份要剪掉1至2毫米，以避免复视。

I was looking over a small bridge in Magdalen Deer Park, and a tiny mustached and hatted figure came and stood by my side.

当时我在麦格德林鹿公园的一座小桥上往下看。

In view of a class of nonlinear singular perturbed system which can be typically evolved into two time scales, a Composed control law for trajectory maneuver is researched by applying feedback linearization, in two step, to inner loop and outer loop.

对于一类具有典型双时标特性的非线性奇异摄动系统，应用反馈线性化理论分内环控制和外环控制两步进行了轨道机动的组合控制规律设计。