This standard describes methods of light level control between an external locking type photocontrol.

本标准描述了外部锁定型光控器之间的光度控制方法。

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The image-dissector scanner is another heavily used and very successful low light level detector.

析象管扫描器是另一种常用而且很成功的微光探测器。

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The image - dissector scanner is another heavily used and very successful low light level detector.

析象管扫描器是另一种常用而且很成功的微光探测器。

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Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light.

VOA: special.2010.11.10

And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.

与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。

麻省理工公开课 - 化学原理课程节选

I'm sure there's some upper limit as there are to most things, like if we think of wavelengths and different types of light, there is so large that you can get, but you would be approaching that level.

我确信对于大多数事物,都会有一个上限，就像我们考虑波长和不同的光时，那个太大了，但是你可以接近那个量级。

麻省理工公开课 - 化学原理课程节选

Many individual investors could overwhelm the liquidity on either the buy or the sell side of BDL with this light level of volume.

FORBES: Know When To Sell

Sensors automatically turn off lights after five minutes if they detect no movement and adjust the light level according to the available daylight.

CNN: Catalog company going lean and green

About 93 percent of 3, 040 large U.S. hospitals used one or more day lighting or lighting conservation features, including tinted window glass (80 percent), reflective window glass (39 percent), external overhangs or awnings (47 percent), skylights or atriums designed to provide light (57 percent), automatic controls or sensors that increase or reduce lighting in response to the level of natural light (14 percent), and occupancy sensors that reduce lighting when rooms are unoccupied (46 percent).

FORBES: Heal Thy Self: U.S. Hospitals Are Huge Energy Hogs