查询词典 spontaneous emission

We have come to the following conclusions:(1) the existence of the monoatomic layer is conditional, it depends upon the temperature, surface structure and purity of the substrate as well as upon the vacuum environment;(2) the appearance, and sometimes disappearance, of the emission peaks is a problem for further study, and it can not be explained simply by the monoatomic layer...

关于时而能、时而又不能观察到的电子发射峰值，是一个有待于进一步明确的现象，不能简单地用单原子层和偶极子理论来解释；3。吸附了外界原子或分子使电子发射增加的事实，并不是由于偶极矩降低了基底的逸出功，发射的电子来源于被吸附物质的价电子；4。实验证明&L&阴极是Ba-O-W系统，它既不是单原子层，也不是单分子层，也不适用偶极子理论。

When the system were free of 〓 could also induce the emission of luminous intensity.

激光光解时间分辨技术是定性定量研究光物理化学的最有效手段。

The development of low-tension fluorescence materials of Field Emission Display and nanometer zinc oxide have been briefly summarized in the paper . Zinc oxide was thought to be a good low-tension fluorescence materials .

本文简单总结了和场发射低压荧光材料研究现状和纳米氧化锌的研究进展，认为氧化锌是很有前途的一种低压荧光材料，但其作为低压荧光材料还需要很多的改进，最主要是粉体的表面形貌和发光效率及发光色纯度等。

The morphologies of the films were investigated by field emission scanning electron microscopy.

样品的形貌由场发射扫描电子显微镜表征分析。

This article describes the design principle and design methods of liquid cargo and its stripping system,washing system,venting system,vapor emission control system, liquid cargo area fire fighting system,etc.

本文介绍了与化学品船液货装卸作业相关的液货与扫舱系统、洗舱系统、透气系统、蒸气回收系统、液货区域消防系统等系统的设计原则和设计方法。

The flux rate of methane emission from the peatland in Qinghai-Tibet highland and the freshwater marsh in Sanjiang plain ranged from 0.16 to 10.0 mg CH4 m-2 h-1 with an average of 2.96 mg CH4 m-2 h-1 and 0.16-54.6 mg CH4 m-2 h-1 with an average of 19.6 mg CH4 m-2 h-1, respectively.

依据本研究野外实际测定的甲烷排放通量和前人已有的研究结果，初步估算了我国沼泽湿地甲烷年排放总量为1.76Tg ，占全球沼泽湿地甲烷排放总量68Tg 的2.59%。

It is because that they neglected theeffect of host materials and did not consider the interactionbetween Eu2+ and intr insic emission.

提出了关于Eu2+掺杂的卤化钡的发光动力学模型

In the spark-ignition engine, recirculating some of the exhaust gas reduces the emission of nitrogen oxides.

在火花点火的发动机中，再循环的一部分废气减少了氧化氮的有害污染物。

I also found that broad Balmer emission lines probably have gravtitational redshifts. I tried to explain in the context of binry black hole model the quasi-periodic optical darkening and brightening, the H_βdouble peaked profile, the gravitational redshift of H_βemission line,and the wiggling of jet.

我注意到宽发射线H_β有双峰结构，并对双峰结构尝试给出了合理的解释，我还注意到巴耳末宽发射线可能存在引力红移，并尝试在双黑洞模型下来解释准周期性光学变暗和爆发、H_β双峰结构、引力红移和喷流摆动。

Emphasis is given to the ultrasonic guided wave technology and modal acoustic emission technology, including the propagation characteristic of guided waves, the method of experiment and numerical simulation etc.

着重对超声导波技术和模态声发射技术在管道检测中的最新应用进行了评述，内容涉及超声导波的传播特性、实验检测方法及其数值模拟等。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。