查询词典 light emission

Zinc oxide is an n-type direct band-gap semiconductor material. Due to the large exciton binding energy of 60 meV, which ensures the large exciton emission at room temperature, it is regarded as one of the most promising materials for fabricating efficient ultraviolet blue light emitting device.

氧化锌是直接带隙宽禁带半导体材料，具有较高的激子束缚能(~60meV)，可以实现室温下的紫外受激辐射，在紫外发射器件等领域具有广阔的应用前景。

Bao. I think he does not know the : quasar physics at all!: A simple reason: astronomers detected redshifts of quasars based on the spectr : al lines emitted from the emission line regions, which are 0.1 to 1 parsec (1p : arsec=3.26 light years) far away from the central black hole. Therefore there : is very little effect from the gravitational redshift!

观察到的类星体的光可在几日内有明显的变化，可见类星体的发光区大小在光日尺度以下，即使你认为类星体的光谱线产生于吸积盘，那么吸积盘的大小须在光日尺度以下才能不相矛盾，请你说出一个你认定的类星体吸积盘的大小尺度与该尺度内所具有的质量，及因此计算出的可忽略的引力红移。

Another important thing to remember is that all emission testing facilities will fail a vehicle that has the "check engine" light illuminated at the time of the test -- even if it is only lit to remind you of a past-due oil change or 60,000-mile tune-up.

另一件重要的事要记住的是，所有发射测试设施，将无法通过车辆有"检查发动机"指示灯发亮，在时间的考验-即使是仅有亮起，以提醒你的过去-由于油价变动或6 0 000 -哩调行动。

The emission of light from a phosphor after removal of excitation.

多巴胺是大脑中产生满足和快乐的一种化学物质。

The emission of light from a phosphor after removal of excitation .

大概他的神经天生就很迟钝以至不容有任何刺激的余地。

The emission of light that does not derive energy from the temperature of the emitting body, as in phosphorescence, fluorescence, and bioluminescence.

发冷光：不是由于发光体的热量而来的光的发射，比如在磷光，荧光和生物性发光中。

An even larger "hotspot" of radio emission detected by VLA (seen in an image with a much larger field-of-view) reveals that the jet terminates much farther away from the galaxy, at a distance of about 850,000 light years away.

在VLA射电图中（见7楼的大图）有个甚至更大的"热点"揭示出这个喷流最终终结的地方，离发出的星系有85万光年之遥。

When they do, they emit light in random directions, a process called spontaneous emission.

当他们这样做，他们发光，在随机方向，一个过程，所谓的自发辐射。

On the base of light absorption and emission model, the optical model TVROM which is used for drawing semitransparent body takes the shade, direct scattering, indirect scattering and other factors into consideration.

用于半透明体绘制的光学模型TVROM在光线吸收与发射模型的基础上，考虑了阴影、直接散射与间接散射等因素。

Spontaneous emission is an important subject of physics for it is one of three basic processes of light interacting with matter.

自发辐射作为光与物质相互作用的三个基本过程之一，一直就是物理学的一个重要研究课题。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。