夜间摄影与白天摄影受到同样条件的约束——即光圈，快门速度，感光度——不过它对于这些参数的控制都要达到极致。
Night photography is subject to the same set of constraints as daylight photography - namely aperture, shutter speed and light sensitivity - although these are all often pushed to their extremes.
发现在它们的红移、光学光度以及平均光学-X射线谱指数的直方分布图上，X射线选择类星体统计上都分布在这些参数图的低端。
On the histograms of their redshift, optical luminosity and average optical X-ray spectral index, it is found that X-ray selected quasars are distributed at the low ends of plots of these parameters.
这门课同样适合那些懂得IS O感光度、光圈、快门速度、白平衡等摄影知识并能用自己的数码单反或桥梁相机设置这些参数的同学。
It is ideal for those who have an understanding of ISO, aperture, shutter speed, white balance and how to change these on your digital SLR or bridge camera.
文章分析了天基光电望远镜对空间目标成像时三者的位置关系及其变化对目标光度特征的影响，以及望远镜系统参数对空间目标成像光度特征的影响；
The influence of the relative position and the parameters of the telescope to the luminant characters of space target imaging in space-based telescope were analyzed.
方法：采用液中固化法制备果胶钙骨架型小丸并优化其工艺参数，以紫外分光光度法测定其体外释放度。
METHODS Rutin calcium pectinate pellets were prepared by in-liquid solidifying method, the best parameters were chosen and its release properties in different media was evaluated.
采用双波长分光光度系数倍率法测定尼索地平在不同浓度下在乙醇中的光解动力学参数。
The Parameters of photodegradation kinetics of nisoldipine at different concentrations in ethanol were measured by using dual wavelength Kratio ultraviolet spectrophotometry.
系统采用三参数逻辑斯蒂模型，针对二值型数据，该系统能有效地解决目前自适应测试中不可避免的试题曝光度问题。
The systems using three parameters Logistic model, in view of the value of data, the practice has proved that it can resolve the exposure problems in the current adaptive test.
提出了光电成像法桥梁挠度测量系统的光度学参数选择方法，以此实现桥梁挠度的长期、在线监测。
The result contributes to selecting the parameters of photoelectric imaging deflection measurement system and achieves the long online of deflection.
建立了紫外分光光度法测定青霉素酶对青霉素底物动力学参数的方法。
UV spectrophotometric method to estimate the kinetic parameters of penicillinase on penicillin substrates was established.
用自制的分相器与流动注射仪联用，对有机相析出液- 液萃取光度法测定微量铜的流路参数和操作程序进行优化。
A method for the spectrophotometric determination of trace Cu 2+ with flow injection liquid liquid extraction separation and pre concentration was developed.
方法：转篮法，以对乙酰氨基酚为溶出指标，用紫外分光光度法检测，提取参数，并对参数进行相关性分析。
METHODS: By using circle basket test with paracetamol as the dissolution index, detected by UV, to abstract parameters and make correlation analysis.
方法采用分光光度法测定罗红霉素胶囊的体外溶出度，并对溶出参数进行相关性分析。
Methods The dissolution of roxithromycin capsules was analyzed with spectrophotometry. The dissolutive parameters of different products were compared.
本文采用单因素试验，运用紫外分光光度法作为黄芩苷的分析方法，对黄芩苷的水提工艺的影响因素进行了考察，并在此基础上进行正交实验，优化提取工艺参数。
The effects of several influential factors on the water extraction of baicalin were investigated by single factor experiment using UV-spectrometry for the determination of baicalin content.
提出一种眼镜度数测量方法，利用位置探测器和3条光线实现对棱镜度、球镜度和散光度等镜片参数的测量。
A position detector and 3 beams of ray are used to measure the prismatic, spherical and astigmatic powers.
用U-4100紫外、可见、近红外分光光度计对其进行光热性能表征，讨论了隔热涂料的配比，涂膜厚度和浆料固含量对光学参数的影响。
The coated glasses were analyzed with U-4100 spectrophotometer. The effect of paint proportion, coating thickness and solid content of suspensions on optical performance were discussed in this paper.
用U-4100紫外、可见、近红外分光光度计对其进行光热性能表征，讨论了隔热涂料的配比，涂膜厚度和浆料固含量对光学参数的影响。
The coated glasses were analyzed with U-4100 spectrophotometer. The effect of paint proportion, coating thickness and solid content of suspensions on optical performance were discussed in this paper.
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