查询词典 spontaneous emission

In micro-scale research, we calculated the line source emission rate of typical roads in Shanghai, from which we can learn the pollution situation of roads.

微观上，首先计算了上海市典型道路的线源源强，从中可以了解污染严重的路段。

At visible wavelengths, the strongest emission line in this pattern is in the red part of the spectrum and is known as "Hydrogen-alpha" or just H-alpha.

在可见光波段，特征谱线中最强的发射线是光谱中红端的部分，就是人们熟知的"氢—α"或"H—α"。

A method was developed to measure the gas temperature in the chamber of solid rocket motor by using the double line of atomic emission spectroscopy. The measurement system had been designed.

发展了一种利用原子发射双谱线法，测试固体火箭发动机燃烧室內燃气温度的方法，设计了相应的测试系统。

This result can be used to qualitatively interpret the positive correlation and anti-correlation between the near infrared excess and equivalent width of Hα emission line, as observed in some Be stars.

此结果可用来解释一些Be星中观测到的红外超和Hα等值宽度的同时增长，也可用来解释另一些Be星中观测到的红外超和Hα等值宽度的相反变化。

IRAS 17213-3841 : Late Type Carbon-rich Star or Early Type Emission Line Star?

IRAS 17213-3841：晚型富碳星还是早型发射线星？

As the TiO_2 was encapsulated by PMMA, the performance of the nanocomposite could advance its uvioresistant line emission, both enhanced its mechanics and thermal property.

将改性的纳米TiO_2加入PMMA，既可以提高它的抗紫外线辐射的性能，同时对它的力学和热学性能也有所改善。

This was soon followed by the detection of faint, diffuse, optical line emission from the Galaxy with Fabry-Perot techniques, which established the temperature and ionization state.

后来，使用Fabry-Perot技术，对星系中的暗发射线进行了探测，这确定了它们的温度和离子化状态。

In order to optimize the parameters of dielectric barrier-discharge plasmas, the emission spectrum of second transition line of oxygen and nitrogen under normal temperature and pressure was measured with a grating spectrometer.

为了对绝缘阻挡放电等离子体进行参数优化，以常压DBD等离子体为研究对象，在常温常压下使用可见光光栅光谱仪对等离子体发光光谱进行了诊断，得到了N2和O2的第二正带跃迁谱线。

Based on the theory of atomic spectroscopy,a double line of atomic emission spectroscopy is used to measure the temperature of explosion products of aluminiferous emulsion explosive continuously.

根据原子光谱学理论，利用原子发射光谱双谱线测温系统对含铝乳胶炸药的爆炸产物温度进行了实时测量，获得了爆炸产物瞬态温度-时间分布曲线，分析了不同配比炸药造成爆炸产物温度出现差异的原因。

But the energy was concentrated in a spectacularly sharp line in the emission spectrum--in other words, the radiation was exceedingly uniform, consisting of a single wavelength with little contamination from other wavelengths.

但是能量被集中在发射谱中一条非常狭窄的谱线上。也就是说，辐射是极度均匀的，只包含有一个单一的频率，而没有其他频率的干扰。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。