ISO4892-3:1994 Plastics-Methods of exposure to laboratory light source-Part 3: Fluorescent UV lamps.

1994塑料实验室光源暴露试验方法-第3部分：荧光紫外灯。

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We can't measure it over billions of years or over billions of light years, but we can measure it to very, very high precision in the laboratory.

我们无法回到数十亿年以前或到数十亿光年以外的距离进行衡量，但我们可以在实验室以非常，非常高的精度测量它。

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When you create a whole new kind of light, everything from medical imaging and laboratory spectroscopy to photovoltaics could stand to benefit.

一旦你创造了一种新型的光源，不论是医学成像或者是实验室的光谱分析再到光电池都将受益匪浅。

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He began experimenting with light-emitting diodes, LEDs,at his laboratory at the University of Calgary in Alberta.

VOA: special.2009.12.21

Back in his laboratory at the University of Calgary,Alberta, he experimented with light emitting diodes, technology he was familiar with as a professor of renewable energy.

VOA: standard.2009.12.13

When the results were double-checked with a laboratory light microscope, the device had managed to pick up 70% of the samples with infections present - and 90% of the heavier infections.

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The nova is providing a unique stellar laboratory, shedding light on processes normally confined to supernovae that are too slow for Earth-bound astronomers to learn from quickly.

BBC: Gamma rays from nova explosion surprise astronomers

Dr. Freire and his colleagues put Einstein to the test in a cosmic laboratory 7, 000 light years from earth, where two exotic stars are circling each other.

WSJ: Einstein Proved Right on Gravity��Again