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In this thesis, we investigate theviability and electronic properties of ultrathin carbon naontubes, aswell as carbon nanotubes doped with boron and nitride atoms usingfirst-principles method which is based on Density Function Theory.

基于密度泛函的第一性原理，本文研究了小管径碳纳米管的稳定性和电子性质，并探讨了硼和氮掺杂对碳纳米管性能的影响。

Freedom of speech is one of the bottommost principles of democracy .

言论自由是民主的最根本的原则之一。

And it holds that the establishment of a kind of integrated moral views on life in consistent with the goal of current medicine is the premise to the cultivation of trust relationship and the adherence to the bottommost ethical principles aiming at the three different levels of patient-physician relations is the foundation of trust relationship between two parties.

在此基础上，重点讨论了基于诚信的患医关系如何构建的问题，认为任何缺乏统一性、稳定性、连续性的生命道德观的生命伦理学，在临床伦理决策中不可避免地会推崇决疑法和情境伦理学方法，从而破坏患者对医方的信任度；认为一种符合于当前医学目的的、统一的生命道德观的确立是培育诚信关系的前提，而针对三个不同层次患医关系的最底线伦理原则的坚守是双方诚信关系构建的基础。

Bowker John H%Michael John W Atlas of limb prosthetics:surgical,prosthetic,and rehabilitation principles St Louis:Mosby Year Book , 1992,null

燕铁斌%金冬梅平衡功能的评定及平衡功能训练中华物理医学与康复杂志， 2007，11

In the dissertation, principles of phase-shifted full-bridge ZVS PWM and push-pull boost converter are analyzed; Reason of duty ratio dropping out and solution measures are introduced at the same time; The magnetic biasing and ZVS methods of Lagging brachium are studied detailedly in the bidirectional DC converters.

在本文中首先分析了移相全桥式ZVS-PWM功率变换和推挽式DC／DC Boost功率变换的工作原理，分析了移相全桥式滞后臂实现零电压关断困难以及占空比丢失的原因以及采取相应的改善措施，分析了双向DC／DC变换器产生偏磁的原因以及采取抗偏磁的措施。

This paper gives out the principles and improving schemes of transformer discharge equipment and resonance booster discharge equipment. By detecting the current in the main circuit, the gap's breaking-down can be identified, and the single chip micro-computer will send out corresponding control signal to make the IGBTs to switch off or cut off the input voltage, by this mean, we can make sure that every time of the experiment, the sample will discharge only once. The paper also introduces the principle of the protection circuit. At last, the experimental waveforms were listed, which prove the feasibility of the high voltage discharge fast switch-off device.

该文给出了变压器和谐振升压器2种高压放电试验装置的原理以及改进方案，通过检测主回路电流大小判断间隙是否被击穿，由单片机发出相应控制信号，采用IGBT等开关器件控制试验电压的通断，保证了试品每次试验只进行一次放电，介绍了保护电路的原理，给出了试验波形，证明了此高压放电速断装置的可行性。

Unlike Breen, we decompose the deformation of textile into elastic de formation, bend and shear, and deduce simple energy functions of the three kinds of deformation in accordance with the principles of strength of materials.

采用与布的物理结构相似的粒子网格作为布的模型，在此基础上，将布受到外力作用时的形变归纳为弹性伸缩、弯曲和剪切3类，并推导出相应的能量函数来描述这3种形变。

Firstly, the paper briefs the research status quo, the principles and methods of Auto-focus technology.

本文包含了以下一些内容：(1)介绍了自动对焦技术的现状、原理和方法。

The technological process and principles of potassium chloride production method by mixing brine are introduced in the paper.

文章介绍了兑卤法生产氯化钾的工艺原理和工艺流程，并且讨论了实际生产中出现的一些问题。

It is a tough and winding process in which people try hard to bring to light those objective principles.

在探求真理的过程中，人们对客观规律的认识要经过艰苦曲折的过程。

That snake Alaric named Archbishop...

庇护。。。那个毒如蛇蝎的Alaric被命名为大教主。。。

You have done lots of magical things to be amazed at.

你做了很多神奇的事物感到惊讶。