光线

A concave lens causes rays to diverge as though they are coming from a focal point.

发散透镜使光线分开，就好象从焦点上发出来的那样。

Since these rays do not actually meet, they cannot form an image without a condensing lens of sort.

由于这些光线实际上不相交，如果不用某种会聚透镜的话，它们是不能成像的。

The design method of conformal optical system based on real ray tracing was presented,designed result was satisfactory.

提出了基于实际光线追迹的共形光学系统设计方法，获得了较好的设计结果。

Huge viewports are filled with flashing shoals of grouper, wrasse, amberjack, conger eel and, finally, a huge ray cruising the turquoise depths imperiously.

巨大的观景窗外充斥着闪闪发光的鲶鱼群、濑鱼、琥珀鱼、海鳗，最后，一道巨大的光线透过深深的松石绿色的海水。

"You may sit down, if you like," she said in a contralto. The light is too bad for reading.

"如果你愿意的话，就坐下吧，"她低声说，光线太暗了，不适合读书。

In contrasty light they have a hell of a time with highlight and shadow detail.

在光线反差性上，不论是明亮与暗处的细节，数位单眼一直充满质疑。

It stretches the histogram to the sides, leaving the mid-tones slightly more contrasty and the dark parts darker and the light parts lighter.

它延伸到两侧的直方图，离开中音调稍微反差和黑暗部分的光线较暗和部分轻。

A beam throgh convex lens will be converged, so the lens is also called a converging or positive lens.

凸透镜具有会聚光线的作用，所以也叫"会聚透镜"或"正透镜"。

This mirror is out of the path of the light rays converging on the primary mirror and far enough off the wall of the tube to be away from tube currents, but in a position to reflect the convergent rays from the off-axis parabolic mirror.

这是出于镜面光射线道路的汇合的小镜子，远远不够的管过墙管应远离水流但能够反映收敛光线从离轴抛物面反射镜。

A convex lens is used to concentrate rays of light.

凸透镜用于聚集光线。不适合

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。