远光

If the observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

Analyses show that refractive index changeinduced by thermal effect is similar to the change induced by other effects for linearabsorption,if laser pulse width is far less than the characteristic time of sample,i.e.refractive index change is directly proportional to spatial part of incident pulse laserintensity,so time averaged nonlinear refractive index can be defined.

结果表明，当激光脉冲宽度远小于被测样品的特征时间时，对于线性吸收来说，其热效应产生的折射率变化与其它效应产生的折射率变化有类似的形式，即与入射脉冲激光光强的空间部分成正比。因而可定义时间平均非线性折射率。在这种情况下，可用通常的Z-scan法进行非线性折射率及热光系数的测量，所得结论符合以前的实验结果。

Now, if light from the rear of the bike has further to travel to you than light from the front., then the light arriving at a particular point in time from each end must have started out at different times-when the bike was in different positions.

现在，如果光从自行车尾到你的距离比从车头到你的距离远，那么从两头发出的光同时达到某一点时，它们肯定是在不同的时刻发出的-当自行车在不同的位置。

Numerical results show that the figure of far-field light distribution, the light intensity of peak value, and the power of the central region degenerate or trail off in varying degrees.

结果表明远场光强分布的图形、峰值光强度和中心区域内的功率，受到各因素的影响，都会不同程度的变差或减弱。

Under red light, a tagged protein of interest localizes to a specific target, while exposure to far-red light causes the protein to rapidly delocalize and diffuse throughout the cell.

在红光下，利益标记蛋白本地化的具体目标，而暴露于远红光导致蛋白质迅速本土化和传播在整个细胞。

Nexkon megaphones deliver the clear effective voice amplification upon any condition,easy to handle both of hand grip type and shoulder type also both combination type.

简述： ·优质铁皮结构，精致铝材反光罩，光利用率高，投射距离远，面积大，光场均匀，光线柔和，亮度高。精细喷漆处理，做工细致，造型美观，紧凑，广泛应用于舞台、剧场等的背景照明。？？

A new vacuum ultraviolet detector is described, its photocathode is a solar-blind, a proximity focus tube with less dispersion and image distortion is adopted, its read-out system has light-coupling and electricity-coupling, the light-coupling read-out system is simpler and responds in real time, the electricity-coupling read-out has high sensitivity and resolution as well as long detection distance.

详细介绍了一种新型响应波段为105nm～300nm的真空型紫外成像探测器，其光电阴极具有&日盲性&，管型采用近贴聚焦结构，从而使得弥散和像差得以减小。探测器读出系统有光耦合读出和电耦合读出2种读出方法：光耦合读出系统能实时响应；电耦合读出灵敏度高，分辨力强，探测距离远。

With a view to knowing more about how NaHSO〓 increased Pn in higher plants, we studied the effects of NaHSO〓 on the cyclic electron flow around PSI in wheat (Jing 411) and rice (Shan-you 63). It was observed that the transient increase in chlorophyll fluorescence after the termination of actinic light was increased and the half-time of re-reduction of P700〓 was shortened in both rice and wheat leaves, indicating that cyclic electron flow around PSI was accelerated by NaHSO〓 treatment.

为探究NaHSO〓促进高等植物光合作用的机理，我们研究了NaHSO〓对小麦（京411）和水稻（汕优63）围绕PSI的循环电子传递影响，实验发现低浓度NaHSO〓可促进小麦和水稻叶片的叶绿素荧光在作用光关闭后的短时上升以及缩短叶片在远红光后P700〓再还原的半时间，表明NaHSO〓可以促进小麦和水稻的围绕PSI的循环电子传递。

In accord with the promotion in the photosynthetic oxygen evolution and ATP content, the transient increase in chlorophyll fluorescence after the termination of actinic light was increased; and meanwhile, the half-time of re-reduction of P700〓 in the presence of DCMU after a pulse light under background far-red light was shortened by approximately 30%, indicating that cyclic electron flow around PS1 was accelerated by the treatment.

与此同时，我们还发现经NaHSO〓处理后，蓝藻细胞的作用光关闭后叶绿素荧光瞬时上升的幅度增加，同时在远红光背景下和DCMU存在时，饱和闪光后蓝藻细胞P700〓再还原的半时间缩短约30％，表明低浓度NaHSO〓溶液处理能够促进蓝藻细胞围绕PSI的循环电子传递。

In Europe and the United States, the Baoguang to appear in Germany's most famous Broken Hill, in China, while in the Baoguang famous Emei Mountain.

在欧美国家中，宝光以出现在德国的布罗肯山最出名，在中国，则以在峨眉山的宝光声名远扬。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。