等离子体

There are two focus included as the following two topics:The measurement of equilibrium charge of dust particles in the plasmas By studying the forces acting on dust particles at the equilibrium position, where, the electric force and gravity force are importantly considered, the equilibrium charge of dust particles can be presumedly calculated according to the relation of the forces.

文中着重进行了以下两个方面的研究：一、等离子体中尘埃粒子平衡电荷量的测量通过研究尘埃粒子在平衡位置处的受力情况确定尘埃颗粒所带的电荷量。主要考虑两种力的作用即尘埃粒子所受的电场力和重力。根据这两种力的平衡关系就可以粗略得出尘埃粒子在平衡位置处的电荷量。

Recent developments of experiments, mechanism and modeling research on the plasma ignition of propellants were introduced.

介绍了发射药等离子体点火的试验、机理和模型研究的最新进展。

Quadrupole mass spectrometer was used to analyze the plasma environment of RF magnetron sputtering PTFE target with pulsed bias.

采用四极质谱仪测量了试验参数对高压脉冲增强射频磁控溅射PTFE靶等离子体气氛的影响规律。

For the part of radiation with more than 500 eV energy of quanta, remarkable deviation from the Planckian-spectrum is observed.

这主要是因为等离子体热斑的出现、在1.5～2 keV范围内线谱的存在和加速电子轫致辐射的结果。

Negative radial electric field always associate with edge ion loss or separation of ions and electrons in same layer.

通过大量分析各种装置H-模的产生条件及其差异性，诸如装置磁场位形、等离子体与壁或限制器的间隙、第一壁条件、离子梯度磁场和曲率漂移方向等因素，研究它们与负径向电场或者说与边界离子损失的关系，认为在环形磁约束装置中电子基本上沿磁力线或磁面运动，而离子由于受梯度磁场和曲率漂移的影响大，有横越磁面的运动分量，会产生相对于磁面的扩张轨迹和压缩轨迹。

This dissertation mainly focused on the growth and characterization of GaN based materials grown by radio frequency plasma assisted molecular beam epitaxy.

本文研究了GaN和AlGaN/GaN材料的射频等离子体分子束外延生长及其特性，并对相关器件工艺中的若干重要问题如刻蚀、欧姆接触等，进行了初步探索。在前人工作的基础上，进一步优化了GaN材料的生长工艺，并深入研究了材料生长过程中的一些重要问题。

This dissertation mainly focused on the growth and characterization of GaN based materials grown by radio frequency plasma assisted molecular beam epitaxy. Some of the devices related technics, such as etching and ohmic contact, were also discussed.

本文研究了GaN和AlGaN/GaN材料的射频等离子体分子束外延生长及其特性，并对相关器件工艺中的若干重要问题如刻蚀、欧姆接触等，进行了初步探索。

The main task of this paper is to investigate the growth of high quality single crystalline Zinc Oxide thin film on sapphire (0001;α-Al_2O_3) substrate via radio frequency plasma-assisted molecular beam epitaxy. The work will lay a foundation for application of novel semiconductor material, ZnO, in the field of photoelectronic devices.

本论文的主要任务是研究在蓝宝石(0001)衬底上利用射频等离子体辅助分子束外延系统生长出高质量的氧化锌单晶外延薄膜，为ZnO这一新颖的半导体材料在光电子器件方面得到应用打下基础。

Based on this subject,the dissertation carried out the work on plasma layer radome.

基于此因，本文开展了薄层等离子体天线罩的研究工作。

So in this dissertation,besides the research on radome plasma, we also studied the excitation and applied technology of SPs.

基于此，本论文除研究天线罩等离子体外，还对表面等离子体激元的激发和应用技术作了研究。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷