查询词典 white light

Based on the dual-beam interference principle and white light interference feature, this dissertation designs the SWLI surface 3D topography measuring system and analyzes the principle and characters different from that of traditional monochromatic light interference. According to different descriptions of the white light interference feature, the optimal interference point extracting algorithms are classified, analyzed and compared in detail. In the light of the design rule of improving measuring precision and speed simultaneously, two new types of algorithms, named Feature Matching algorithm and Intensity Contrast Moving Window algorithm, are designed to acquire good results according to practical conditions.

基于双光束干涉原理及白光干涉特性，本文设计了扫描白光干涉法表面三维形貌测量系统，分析了该方法区别于传统单色光干涉测量的测量原理及特点，根据对白光干涉特征不同的描述方式对最佳干涉点提取算法进行了分类、分析与比较，并在提高测量精度与测量速度设计原则的指导下，根据测量系统的实际条件设计了两种新的算法：特征匹配法和对比度移窗法，在实际测量中达到了比较好的测量效果。

The project ducts research on new sealing structure of power-type white light emitting diode to achieve low thermal resistance and emitting efficiency over 80lm/W. It can promote phosphor transfer efficiency and improve sealing technique procedure, introduce automatic production and testing equipment,to increase white light LED emitting efficiency and other performance indexes and further large-scale productivity.

本项目专题研制开发功率型白光发光二极管新型封装结构，实现低热阻、发光效率达80lm/W以上的LED光源封装能力，提升自制荧光粉转换效率与制备技术，改进现有封装工艺制程，引进自动化生产及测试设备，提升白光LED发光效率及其其它各项性能指标，形成批量生产能力。

The second experiment is to fabricate white light LED from red and green phosphors pumped by blue light LED. The blue light LED we used in our experiment has the wavelength range between 450 and 452.5 nm, and the chip size is 17 mil *14 mil. There are two kinds white light LED we fabricated in the experiment. There are three blue light LED chips bonded in single package of both kinds package. The different of the both packages is mixed phosphor of encapsulation. One of the experimental devices was encapsulated YAG phosphor mixed silicone to fabricate white light. The other is red and green phosphor mixed encapsulation. The compared and focused parameter was luminous efficiency. YAG phosphor pumped white light has the luminous efficiency 72 lm/W, CRI 70, CIE(0.32, 0.33), CCT 5622°K at the operating current 60mA. On another hand, red and green phosphor pumped white light LED has the luminous efficiency 55 lm/W, CRI 90, CIE(0.31, 0.32), CCT 6479°K at the operating current 60mA. We fabricated the red and green phosphor pumped white light LED, and proved that it could has much higher CRI under similar compared conditions, CIE xy and CCT.

第二个实验是使用蓝光LED晶粒来制作白光元件，蓝光LED晶粒波段范围在450 ~ 452.5 nm，晶粒大小为17*14 mil，以三颗蓝光LED晶粒搭配YAG萤光粉(黄绿光 540 nm)制成白光元件，再以另外三颗蓝光LED晶粒搭配红色萤光粉(613 nm)混合绿色萤光粉(519 nm)制成的白光元件进行发光效率比较；搭配YAG萤光粉的白光元件在注入60 mA的电流时所量测到最大的发光效率是在72 lm/W，演色性数值大约为70，CIE色度座标为(0.32， 0.33)，色温是在5622 °K；而搭配红色萤光粉混合绿色萤光粉的白光元件在注入60 mA的电流时，最大的发光效率在55 lm/W，演色性数值大约为90，CIE色度座标为(0.31， 0.32)，色温在6479 °K；证明了蓝光LED晶粒搭配红色萤光粉混合绿色萤光的白光元件演色性指数可以高达90 以上的结果。

The results were as follows:(1) The spectral sensitivity response at 14 monochromatic light selected through 340nm to 605nm occurred in curve with multiple peaks, the primary peak in 340nm (ultra-violet) is the highest response rate of phototaxis (21%), the secondary in 524nm, and the rest in 400-440nm and 483nm in order;(2) The response rate of phototaxis is increasing as the relative intensity of light, it is showed as curves with inverse "L" shape in white light and the monochromatic light of 483nm, as an upward ladder at 524nm and a near straight line at 340nm. However, the response rate could be detected at the lowest intensity and not arrived to the summit at the strongest yet;(3) The effect of sex to response to the spectral sensitivity and intensity is not significant;(4) There was not significant photophobism response to light for the ladybird, the behavior probably derived from phototaxis or partly due to random movements. It can be concluded that both the spectrum and intensity of light stimulus gave rise to the phototaxis of P.

结果显示：（1）在340~605nm波谱内其光谱趋光行为反应为多峰型，峰间主次不明显，紫外340nm处峰最高，趋光反应率达21%，其它各峰依大小次序分别位于绿光524nm、蓝光400~440nm和483nm处；（2）随光强增强其趋光反应率增大，白光和483nm刺激时其光强趋光行为反应呈一倒"L"型式样，524nm时呈一阶梯型，340nm时为一较平直的线型；光强最弱时仍均有一定趋光率，最强时均未出现高端平台；（3）性别对其光谱和光强度行为反应均有一定影响，但影响不大；（4）龟纹瓢虫无明显的避光反应，其避光行为可能是趋光行为衍生或其随机活动造成。

An oxygen-bubble and white-light speckle velocimetry method is presented.Instead ofpulsed laser and commonly used particle,a sheet like-bubble mass generated from anade wire byeletrolysing water is used as particle tracer,a white light flash set controlled by digital time delaycircuit is used as double pulsed light source,and 2-D velocity distribution in a sectional planewithin flow field can be obtained without using light sheet technique.

提出了一种氧气泡粒子白光散斑测速技术，与以往散斑测速方法不同的是，采用电解水时电解阳极丝上产生的氧气泡做为流场示踪粒子，用两个闪光时间间隔由数字延时电路控制的普通闪光灯做为散斑底片拍摄时的双脉冲光源，并且勿需片光技术，即可获得流场内部一个截面上的二维速度分布。

This is because the sencitivity in the ultraviolet region have greater absorption peak, since white screen in the reflection of light irradiation is white light, and thus have an impact on sencitivity.

这是因为，感平质料在紫外线地区有较大汲取峰，由于不黑色丝网在平源照射时不直射的是不黑色平，因而差感平质料有感化。

My company sells supplies (PE, PVDF fluorocarbon, SMP-modified, HDP Weather resistance, PVC) coating thickness: 0.18 0.326 0.35 0.376 0.4 0.426 0.45 0.476 0.5 0.526 0.55 0.576 0.6 0.7 0.8 0.9 1.0 1.2 1.5 2.0 Width: 760 914 1000 1200 1219 1220 1250 substrate: hot dip galvanized, electric galvanized,, cold rolling, bar-hard, hot bar Color: Cleansing gray, lightà, dark blue, light blue, satin ash, lead ash, carbon black , light gray white, sea blue, crimson,°×, horse plastic white, plain, stone white, brick red, sand yellow, dark gray, light blue, blue, Baoshan Iron and Steel blue, night blue, Baoshan Iron and Steel gray matter and white silver gray, light silver, bone white, imperial white, cloud white, green, barley white, light camel, silver gray, silver, ironà, sky blue, broad-leaved green, porcelain blue, ivory, orange,, Oxford blue, white and other colors can be customized according to customer color card.

我公司销售供应（PE、 PVDF氟碳、SMP硅改性、HDP耐气候性、PVC）彩涂厚度：0.18 0.326 0.35 0.376 0.4 0.426 0.45 0.476 0.5 0.526 0.55 0.576 0.6 0.7 0.8 0.9 1.0 1.2 1.5 2.0 宽度：760 914 1000 1200 1219 1220 1250 基板：热镀锌、电镀锌、镀铝锌、冷扎、扎硬、热扎颜色：洁面灰、浅青灰、深蓝、亮蓝、缎灰、铅灰、碳黑、浅灰白、海蓝、绯红、白灰、马胶白、浅白、石白、砖红、沙黄、深绿灰、浅青蓝、纯蓝、宝钢蓝、夜蓝、宝钢灰、白银灰、亮银、骨白、帝王白、云白、黄绿、大麦白、浅驼、银灰、银色、铁青灰、天蓝、阔叶绿、瓷蓝、象牙、橘黄、土黄、牛津蓝、雪白等，颜色可按照客户色卡定做。

The paper studied the effects of five kinds of photoperiod(16、 14、 12、 10、 8h light/d) on the two cultivars of camellia japonica('White snow tower' and ' White-red peony').The morphological and physiological indexes relative to growth were measured. Then the critical daylength and the flower bud differentiation of ' White snow tower ' and ' White-red peony' were defined. The results indicated:(1)Camellia japonica was long-daylength plant, and different cultivar had different critical daylength,the critical daylength of 'White snow tower' was about 14 h light/day,while the critical daylength of 'White-red peony' was about 12 h light/day.

本试验以山茶花的两个栽培品种&白雪塔&与&花牡丹&(White-red peony)为材料，主要研究光周期对山茶花成花的效应，通过测定不同光照长度(16、14、12、10、8小时/天)对其生长发育相关的形态指标和生理指标的影响，确定了&白雪塔&与&花牡丹&的临界日长和花芽分化进程。

8 Although a few materials show white-light emission as a single-emitting component, none has been reported to produce well-separated blue, green, and red emissions beside white light.

7，8虽然一些资料显示白色作为发光单发光元件，都没有报告产生良好的分离蓝色，绿色和红色的排放量旁边的白光。

Through surveys the He-Ne laser wave length, the sodium lamp, the white light interference experiment, the discussion stripe change and two plane mirror's inclination angle and the parallelism relations, quick observation white light interference skill and principle.

通过测量He-Ne激光波长，钠光、白光干涉仪的实验，讨论条纹的变化与两个平面镜的倾角与平行度的关系，快速观察白光干涉仪的技巧和原理。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。