这些发光二极管可以模拟红光。
发光二极管发出了光，这种光被植物感知为红光。
为了验证他们的假设，研究人员使用了一些电灯，实际是使用了发光二极管。
To test their hypothesis, researchers took some electrical lights, actually, they were light-emitting diodes.
如果你找不到那把小螺丝刀，你孩子那带着发光二极管的玩具可就危在旦夕了。
Your children's toys equipped with LEDs are in extreme danger if you cannot ever find that tiny screwdriver.
不断变化的建筑规范、人们逐渐发展的品味，以及维护这些精美的旧标志牌的高昂成本，让企业欣然接受了发光二极管。它们节约能源，但成本仍然很高。
Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient but still carry great cost.
发光二极管已经兴起几十年了。
LEDs - light emitting diodes - have been around for decades.
半导体激光器和发光二极管
所有照明均使用节能发光二极管。
输出是通过面板上的发光二极管实现的。
目前现有的一种放射性显示屏是基于有机的发光二极管。
One type of emissive display that already exists is based on organic light-emitting diodes (OLEDs).
该反应也可以用于制造杀菌剂、防晒霜和有机发光二极管。
The reactions are also used to produce compounds used in fungicides, sunscreen and organic light-emitting diodes.
一个OLED(有机发光二极管)比人的头发丝细200倍。
An OLED (organic light emitting diode) is 200 times smaller than a human hair.
现在，大功率发光二极管占其总市场的1 0%。
Overall, high-power packages now account for 10 percent of the market.
目前市面上多数的白色发光二极管都是基于氮化镓的.
Most of the white LEDs now on the market are based on gallium nitride.
欧兹坎用LED(发光二极管)作为光源，以此制造细胞的阴影。
Ozcan USES an LED as his light source, creating cellular shadows.
红外反应器和发光二极管使得框架内任何物体都清晰可见。
Infrared sensors and LEDs provide a clear visualization of any object within the frame.
基于蓝宝石的氮化镓发光二极管的一般内量子效率约为70%。
A gallium nitride LED on sapphire has a typical internal quantum efficiency of around 70%.
有机发光二极管(OLED)电视机据称有着最薄的电视屏幕。
现在，灯光的另外一种新来源，绿色发光二极管（OLEDs），闪亮登场。
Now another new source of lighting, organic light-emitting diodes (OLEDs), is starting to take the spotlight.
如今首批设计的民用电网电压的能直接替代白炽灯泡的发光二极管已陆续上市.
Now the first mains-voltage LEDs designed as direct replacements for incandescent bulbs are arriving on the market.
如果你找不到那把巨小的螺丝刀，那你孩子带发光二极管的玩具可就命在旦夕了。
Your children's toys equipped with LEDs are in extreme danger if you can ever find that tiny screwdriver.
尝试运行testled，然后观察BeagleBoard - xM上的发光二极管。
Try running testled, and watch the light-emitting diodes (LEDs) on the BeagleBoard-xM.
根据不同的应用需求，这种材料既可以被用来作为太阳能集热器，又可以用来做发光二极管。
The material could either be used as a solar collector, or as a light-emitting diode, depending on the application.
根据不同的应用需求，这种材料既可以被用来作为太阳能集热器，又可以用来做发光二极管。
The material could either be used as a solar collector, or as a light-emitting diode, depending on the application.
保持不同发光二极管产出的一致性也很困难所以他们发出的光会倾向于漂向黄白色。
It is also difficult to maintain consistent outputs from the different LEDs so light from the devices tends to drift into off-white hues.
即使是在目前的早期阶段，他认为硅基的氮化镓发光二极管就已经具有商业意义了。
Yet even at this early stage he thinks gallium nitride-on silicon LEDs would make commercial sense.
大量发光二极管被应用于街灯照明，虽可节能，但未免与老上海的建筑风格格格不入。
Using reams of blinking LEDs for street lighting may save energy, but clashes horribly with the pretty architecture of old Shanghai.
不同于其他一些高科技的降能措施，譬如发光二极管的灯泡，白色屋顶有着漫长和不起眼的历史。
Unlike high-technology solutions to reducing energy use, like light-emitting diodes in lamp fixtures, white roofs have a long and humble history.
“这种科技的核心是基于新一代的高亮度发光二极管”来自英国爱丁堡大学的哈拉尔德·哈斯说。
"At the heart of this technology is a new generation of high-brightness light-emitting diodes," says Harald Haas from the University of Edinburgh, UK.
“这种科技的核心是基于新一代的高亮度发光二极管”来自英国爱丁堡大学的哈拉尔德·哈斯说。
"At the heart of this technology is a new generation of high-brightness light-emitting diodes," says Harald Haas from the University of Edinburgh, UK.
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