They look out into the sky, into the stars, and see a slight variance in light rays that come over the vastness of space, and assume a straight path, or nearly straight.
他们抬头仰望，看向群星，发现从广阔的宇宙射来的光线变化轻微，并假定光沿直线传播，或这近乎直线。
As the density increases, the path of light rays emitted from the star are bent and eventually wrapped irrevocably around the star.
随着密度的增加，恒星里所发出的光线的路径会发生弯曲，并最终不可逆地围绕包裹着恒星。
This platform can simulate the ray tracing for a fixed frequency or sweeping frequencies, also can calculate the group path and the covered region of rays.
该平台可实现定频或扫频射线轨迹演示，计算各射线群路径，覆盖区域等功能。
The method comprises the following steps: after parallel rays project to a target surface area element, acquiring a path parameter of each ray from incidence to reflection;
所述方法包括：当平行射线投向目标面元后，获取每条射线从入 射到反射的路径参数；
The optical path difference of two rays in the condition of near axis is discussed in the single spherical surface refraction.
本文讨论了单球形折射面在傍轴条件下二相邻光束的光程差问题。
After painting the wall the color of sunshine, he used a mirror to deflect rays of light, as he followed the path of the sun, onto the places on the prison wall where the sun did not shine.
在为墙面涂上了阳光的颜色后，他用一面镜子折射光线，沿着太阳的轨迹，将光线投射到狱墙上阳光照不到的地方。
Acting over long sight-lines to the rising and setting Sun or Moon, the refraction significantly alters the path of light rays creating merged, distorted images.
当太阳、月亮东升或西落时，这种效应沿长长视线的方向累积，造成部份光线传播方向出现较大幅度的改变，最后叠出这种扭曲的影像。
Through tempests the sun rays of freedom have cheered us on Like the new path created by Great Lenin to a righteous cause he raised the people Inspired them to Labour and valorous deed!
在暴风雨中一丝阳光为我们打气正如伟大列宁指引出新道路！为了公义他发动了群众启发他们去劳动和奉献！
Through tempests the sun rays of freedom have cheered us on Like the new path created by Great Lenin to a righteous cause he raised the people Inspired them to Labour and valorous deed!
在暴风雨中一丝阳光为我们打气正如伟大列宁指引出新道路！为了公义他发动了群众启发他们去劳动和奉献！
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