查询词典 spontaneous emission

A new method of obtaining secondary electron yield and secondary Cs〓 ionization probability by detecting target current and primary ion current under Cs〓 bombardment is put forward The dependence of Cs〓 ionization probability on primary ion energy, primary beam current and substrate compositions, as well as the dependence of secondary ion intensity on erosion time during transient period has been studied The mechanisms of secondary ion emission are explained

二、提出了通过测量靶流和一次束流求取Cs〓轰击下二次电子产额和二次Cs〓离化率的方法，实验研究了一次离子能量、束流强度及不同基体对二次Cs〓离化率的影响和瞬态过程中二次离子强度的变化规律，并对发射机理做了解释。

The metals and conductive materials with high first ionization energy may have good characteristics of field emission.

第一电离能较高的金属和导体材料可能有着较好的场发射特性。

In recent years, it is moreand more intensive for diesel engine to be required for low fuel consumption,heavy power , low exhaust emission, Iow noise ,and so on.

微电子技术的迅速发展代替了传统的机械和液力控制技术，它在内燃机上得到了广泛的应用。

It is necessary to build a model to accurately estimate isoprene emission flux.

为准确估算异戊二烯的排放通量，建立其排放模式是非常必要的。

On the basis of transmission and conservation of solar visible radiation and the analysis on observation data, an empirical model of isoprene emission was built up.

基于可见光辐射传输与守恒的观点，在观测数据的基础上建立了异戊二烯排放通量的经验模式。

Its physical model is put forth:"Out of an element of the isothermal surface of non-penetrate material covered airtightly by a perfect reflector, the emission is the one of blackbody at the temperature of the isothermal surface."

第二类黑体辐射源概念和物理模型的提出是在他人早期实践及初步模型的基础上抽象而成。

Have an ITV test to confirm that the car complies with Spanish safety standards and emission tests.

拥有互动电视试验，以证实是否符合西班牙汽车安全标准和测试。

Thermal emission characteristics of a negative index semitransparent thin film were studied based on transmit matrix method and Kirchhoff radiation law.

根据传输矩阵法和基尔霍夫定律研究了负折射率薄膜的热发射特性。

In present paper the emission spectra lineshape of BAM were investigated by using lattice relation and theory of multiphonon transitions.

用晶格弛豫和多声子跃迁理论研究了BAM发射光谱的谱峰分布。

The Government will introduce the Energy Efficiency Bill to the Legislative Council with a view to encouraging the public to use energy efficient products that help reduce the emission of greenhouse gases and other pollutants.

政府将会向立法会提交《能源效益条例草案》，旨在鼓励市民采用具能源效益产品，有助减少温室气体及其他空气污染物的排放。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼