光线

An ideal depolarizer can be combined with a λ/2 wave-plate and a λ/4 wave-plate rotating at different angular velocities with a certain ratio.

结果表明，让两波片以不同的角速度绕光线为轴旋转，当复合波片为一个λ/4波片和一个λ/2波片组合时，只要它们的角速度满足一定的比例时，可以组合成一个比较理想的退偏器；当复合波片为两个λ/4波片组合或为两个λ/2波片组合时，无论怎样旋转都不能组合成理想退偏器。

You'd better put the desk where light is best.

你最好把书桌放在光线最好的地方。

Turn on your desk light and there is enough light.

打开你的桌灯就会有足够的光线。

We proved that the necessary and sufficient condition that the developable surfaces touch the second focal surface along the orthogonal trajectories was that the base surface S was a developable surface.

证明了线汇中的两系可展曲面交第二叶焦曲面于正交轨线族的充要条件是原曲面是可展曲面，并给出了两叶焦曲面在同一条光线上两焦点相互对应下，保持渐近曲线相互对应的充要条件。

In the morning, when dew forms on the plant, the light rays are focused by little globules of water collected by tentacles arising between the petals.

清晨，露珠挂在火百合的枝叶上，花瓣中伸出根根触须，收集露珠，光线透过水滴聚焦。

The use of a screen up to 150 diagonal is possible in a dark room with good light control.

在屏幕高达150对角线的使用并非不可能在一个良好的光线控制黑屋子里。

Cornea is a component of the ocular dipotric system, it is the main reflecting interface of the eye, its high diaphaneity is the basis for good visual acuity and inhibiting light from scattering.

作为眼球的屈光系统成分之一，角膜是眼的主要反射界面。角膜的高透明度是抑制光线散射、保持健康视力的重要基础。

Diapositive: A positive image which is designed to be projected or viewed by transmitted lignt.

投射正片：透过光线作投射用的阳图影像。

In this paper,the factors,which consisted of acidity,nitrite,the time of diazotization,concentration and time of decomposing excessive NaNO2,dosage of N-na reagent,time of coincidence and beam,were studied to character the effect of analysis for aniline compound in water.

研究了酸度、亚硝酸盐、重氮化时间、分解过量NaNO2所用试剂的浓度和时间、N-na试剂用量及偶合时间、光线等因素对水体中苯胺类化合物分析的影响。

Dicotyledon leaves and some stem structures e.g.

但是茎的生长方向也会随光线改变。

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。