查询词典 led

Keywords: LED, luminance flux, luminance intensity, luminance, illuminance, goniometric

条件，给出LED 实际测量的定义和条件，分析LED 本身会带来的测量误差。

There are hints in "Led Zeppelin 1", a stunning debut album reputedly recorded in only 30 hours, which has a live, spontaneous feel, but until now the only real evidence I have seen of their greatness is a black and white video of them playing a few tracks of a live set in Scandinavia in front of a silent and bemused audience, this tantalising snippet made me hyperventilate when I heard that at last after 30 years, the legendary BBC sessions were going to be released.

有线索显示，据说Led Zeppelin 乐队的处女专集，令人足以激动得昏倒的&Led Zeppelin 1&是在短短的30小时内就录制完成的，这张专集有一种即兴的，灵感油然而发的感觉，不过到目前为止唯一我能亲眼看到的这张专集伟大的证据是乐队在斯堪的纳维亚半岛的一群安静而又显得有些困惑和发呆的观众面前表演的几段黑白录影带。这四个不知天高地厚的英国年轻人使30年后听到这张专集的我发了狂。

The article research the relative project about visibility, it discussed the principle, it introduced the new measuring method opposite the foreword scattering visibility meter and design the transmit and incept devices of foreword scattering visibility for keystone, it is advanced the characteristics of the light source which is should be possess , it show the advantage of the LED used to the light source and selected PIN LED which matching with it, the article is discussed the optics system and design the reasonable object lens structure, measuring and controlling system and the relative design idea ,design method and the accuracy analyzing etc.

本文研究了能见度测量仪器的有关问题，系统地论述了能见度测量仪器的理论，然后以前向散射式能见度仪为研究对象，论述一种新的测量方法，提出了理想光源应具备的特点，说明了采用LED 发光二极管做光源的优越性，并选择了合适的PIN 光电二极管与之匹配，对光学系统作了全面讨论，设计出合理的物镜结构、机械结构、并详细论述了与之有关的设计思想、设计方法和精度分析等问题。

GE Lumination customers around the world rely on our robust, long-life LED systems to drive significant energy and maintenance savings day after day, year after year.

通过把电子、光学、机械和热能管理等各个领域的技术相结合，GELcore加快了LED技术的应用并创造了世界级的LED系统。

Zhong Shan City Guzhen Hua Zheng photoelectricity illumination science and technology headquarter is research and develop navar and LED display screen always act on selfs own Entrust the enterprise producing , selling , serving for an integral whole high technology a new model , carry out "quality first steadfastly; Prestige first; Serve solemn promise of first " product mass guarantee.

公司介绍：中山市古镇华正光电照明科技部是一向自主研究和开发LED显示屏控制系统及LED显示屏、委托生产、销售、服务为一体的高科技新型企业，坚定不移地推行&质量第一；信誉第一；服务第一&的产品质量保证郑重承诺。

Damaged POWER LED will show unusual characteristics such as leak current remarkably increase, turn-on voltage becomes lower and the POWER LED get unlight at low current.

损坏的大功率LED会出现诸如漏电显著升高、开关电压变低，在小电流下不发光等不正常特性。

As a new-fashioned solid state lighting source, LED has many unique advantages such as nearly no pollution of the product and in the production process; resistance to vibration; easily dimmering from 0 to 100%; operating under safe extra low voltage; continuously operating under the condition of switch-off; having a fixed direction of the light output etc. In recent years, LED's obvious improvement of luminous efficacy and photometric characteristic let it be applied for commercial purpose.

LED作为一种新颖的固体照明光源，具有生产过程以及产品几乎无污染，不怕震动，可轻易实现0~100%的连续调光，能在安全特低电压下工作，可连续工作于开关闪断的工作状态以及其光输出具有定向性等诸多独特的优势，近年来在其光效和光色上的明显进步已使它能进入商业化应用。

This large LED display screen system ,based on chip microcomputer AT89S52,is composed by the following functional modules : keyboard displaying ,sound phonating.

LED 大屏幕显示系统，以 AT89S52单片机为核心，由键盘显示、录放音模块、光电开关、温度采集、定时闹铃、 LED 大屏幕显示等功能模块组成。

Jindal signs×Wujiang factory, professional production of large-scale, standardized product quality excellence is your preferred brand, the main products include×bronze, stainless steel plate, Titanium plate, foil character paste Rongji, Acrylic light-emitting character Blister character of stainless steel bollards character Super bright LED light box character LED Lightbox licensing, copper engraving, etching character licensing drop models, aluminum character trophy series, as well as aluminum alloy flat, Globoidal signs of flowing water processing.

吴江金达铜字标牌厂，专业化生产规模宏大，规格化产品质量优异，是您的首选品牌，主要产品包括铜字铜牌、不锈钢字牌、钛金字牌、金箔字、贴金字、亚克力发光字、吸塑字、不锈钢灯箱字、超高亮LED灯箱字、发光灯箱牌、铜版画、铜版字、滴塑牌、铝字、奖杯系列等、以及铝合金平面水牌、弧面标牌的流水加工。

This system is composed of 32×32 the lattice LED board, the LED board driving circuit, the electro-optical writing pen, the keyboard and the coordinate display panel and the master-control unit.

该系统由32×32 LED点阵屏、点阵屏驱动电路、光电手写笔、键盘、模式与坐标显示板和主控制器组成。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。