光比,light ratio
1)light ratio光比
英文短句/例句
1.Direct light is better for reading than diffuse light.直射光比漫射光更有利于阅读。
2.artificial light is not to be compared with daylight for general use作为一般用途，人工光比不上白日光。
3.ratio-recording spectophotometer比率记录分光光度计
4.split-field photometer分场[对比]光度计
5.Light travels faster than sound.光的速度比声音快。
6.one to one projection system一比一投影曝光装置
7.a match played under floodlights在泛光灯下进行的比赛.
8.relative spectral directional reflectance相对光谱定向反射比
9.Not of itself, but thee.只因你赠给它无比光辉！
10.photoelectric tristimulus colorimeter光电三色激励比色计
11.ratiomethod of Fourier spectrometry傅里叶光谱测量比例法
12.diffuse transmittance漫射透光率,漫射透射比
13.contrast ratio of ELD电致发光屏的对比度
14.Because light travels much faster than sound.因为光速比声速快。
15.using a phenolsulfuric acid colorimetric method用苯酚磺酸光电比色法
16.She avoided Belinda"s eyes.她避开了比琳达的眼光。
parator, optical or graduated scale-type光或分度标式比较仪
18.(metaphor) shining brightly.（比喻说法）明亮的发光。
相关短句/例句
Optical concentration ratio光学聚光比
3)extinction ratio消光比
1.Study of the attenuator for the highextinction ratio testing system;高消光比测试系统衰减器的研究
2.An automatic measurement system forextinction ratio in visible spectrum based on correlation detection principle;相关检测法宽光谱消光比智能化测试系统
3.Effect of theextinction ratio on the performance of optical duobinary transmission;消光比对光双二进制传输性能的影响
4)luminous transmittance光透射比
1.On the basis of the analysis and research aboutluminous transmittance and the scale number of the filter,this article proposes a solution to the specific definition of the response and holding time.在对光阀的光透射比和遮光号进行研究的基础上,提出了对响应特性中响应时间和保持时间的精确定义。
5)specific rotation比旋光度
1.Through comparing thespecific rotation of products that treat ed without saponification, we find that the products treated with saponifica tion have the higherspecific rotation.以提高天然VE 产品比旋光度为目的 ,用皂化与结晶相结合的方法对天然VE 浓缩物进行提纯。
2.Several L-tartaric acid derivatives (1～6) were synthesized and theirspecific rotations were measured.合成出系列的L 半螺旋型酒石酸衍生物 1～ 6 ,测定比旋光度 ,发现酒石酸二乙酯 2 ([α]2 5D+ 3 0 0° ,DMSO)形成 2 ,3 O 亚异丙基酒石酸二乙酯 3后旋光急剧往左偏移 ([α]2 5D - 4 5 0 3° ,DMSO) ,3酰胺化后比旋光值往右偏移 (4a :+ 11 19° ,4b :+ 2 14°) ,还原产物的比旋光值往左偏移 (5a :- 0 5 2° ,5b :- 4 92° ,6 :- 2 95°) ;并用分子的螺旋结构与基团的极化性质研究旋光规
3.In this article we have analyzed mutarotation of D-glucose by means of physics ways determiningspecific rotation and statistical line method.本文用物理学方法,借助于线性回归理论,通过比旋光度的测定来分析D-葡萄糖的变旋光现象,进而阐述温度和氨试剂等因素对D-葡萄糖溶液变旋现象的稳定平衡作用。
6)dulling luminosity ratio吸光度比
1.the influence of chilli growing area,extractive condition and concentrated method of chilli oil resin on thedulling luminosity ratio are studied.研究了辣椒产地、提取条件及浓缩方法对吸光度比的影响。
延伸阅读
光比两只用来照明某一被摄对象的灯光，就其产生的总效应来说，它们之间的强度差，就称为光比。摄影的光比指照明被摄对象的主光与副光之间的亮度值或照度值之比。光比的大小，决定着画面明暗反差，形成不同的影调和色调构成。光比还指对象相邻部分亮度之比。光比大，反差则大，光比小，反差则小。光比的巧用，可有效的表达被摄体的“刚”与“柔”的特性。
