The electrodeless discharge lamps have the properties of simple structure, good color rendering, high light efficiency and long life. They are new energy saving light sources.

高频无极放电灯由于没有电极，因而具有结构简单、高显色性、高光效和长寿命等特性，是一新型节能光源。

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The primary requirements of Strehl ratio and light efficiency for optical modules in the...

并列表给出武器系统中各个光学组件的斯特列尔比和光效率的初步要求。

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Using high light efficiency, small size, non-continuous surface free-form lens design method.

高出光效、小体积、非连续表面自由曲面透镜设计方法。

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Another step forward has been organic LEDs (OLEDs) which also promise greater efficiency and better light than older, incandescent bulbs.

BBC: Plastic bulb development promises better quality light

They absorb the light and convert light to heat with incredible efficiency.

CNN: Is nanotechnology the key to curing cancer?

For example, updated fuel efficiency standards for light-duty and heavy-duty vehicles were incorporated in AEO2012 and AEO2013, tending to lower CO2 emissions relative to earlier projections.

FORBES: Carbon Emissions Projected to Remain Flat for Decades