单支红色发光二极管表示电源已接通。
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。
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%.
但是，与阳光不同的是，这些发光二极管发出的光不支持光合作用。
But, unlike sunlight, the light from these LEDs did not support photosynthesis.
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.
续流二极管的反向恢复特性也得到了明显改善。
The reverse recovery properties of the freewheel diode are also distinctly improved.
发光二极管已经兴起几十年了。
LEDs - light emitting diodes - have been around for decades.
所有照明均使用节能发光二极管。
上面写着，发光二极管，无食物区域。
输出是通过面板上的发光二极管实现的。
二极管是将交流电整流成直流电的电子装置。
Diodes are electronic devices which rectify alternating current to direct current.
半导体激光器和发光二极管
它通过有二极管的凹槽。
二极管是一种只允许电流单向流动的元件。
A diode is a device which only allows current to flow in one direction.
事实上，整个网络变成了一个巨大的光敏二极管。
Tononi said. In effect, the network becomes one giant photodiode.
事实上，整个网络变成了一个巨大的光敏二极管。
通过上述方法降低发光二极管成本的确将引入光明。
Bringing down the cost of LEDs this way really will let in the light.
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.
有机二极管由于其高成本结构将缓慢渗透进入这一市场。
Organic LEDs (OLEDs) will penetrate this market slowly due to their high cost structure.
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).
这种热二极管有各种应用，比如提高热点转换器的效率。
These thermal diodes could have a number of applications, such as improving the efficiency of thermoelectric converters.
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.
这种方式的优势在于蓝色的二极管是最明亮、最节能的光。
The advantage of this approach is that blue LEDs are the brightest, most energy-efficient kind.
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.
前面板显示器显示设置点以及提供给激光二极管的实际电流。
The front panel display monitors both the set points and the actual current delivered to the diode.
有机发光二极管(OLED)电视机据称有着最薄的电视屏幕。
有机发光二极管(OLED)电视机据称有着最薄的电视屏幕。
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