几何光学

In chapter four,based on diffraction theory,we derived the far field intensitydistributions near geometric focus for off-axis Gaussian and uniform beams passing througha primary aberrated optical system.

在第四章中，基于衍射理论，推出了离轴高斯光束和均匀光束通过一个初级球差光学系统后，其几何焦点附近的远场光强分布公式。

Based on the optimized geometries, the optical properties are calculated by employing time dependent density functional theory.

基于优化的几何结构，应用含时密度泛函理论计算了它们的光学性质。

The instrument obtains 2-D data of the screw axis profile section by linear matrix CCD through with optical projection and machine driving, and then works out its parameters.

它采用光学投影的方法，结合机械传动，通过线阵CCD器件，获取螺纹轴剖面外轮廓的二维数据，通过微机处理以后，得到螺纹的几何参数。

In addition, some parameters evaluating concentrating performance of concentrator are calculated, which conclude optical efficiency, geometric concentrating ratio, energy concentrating ratio and the relative percent of greatest disagreement of the flux density.

另外，计算了评价聚光系统性能的一些参数，包括光学效率、几何聚光比、能量聚光比和接收器上能流密度最大不一致性的相对百分比。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。