微克

Chapter 2: Expatiate on the basic theory of the GRIN micro-sphere-lens, especially on the classical model—MAXWELL fisheye lens, which demonstrates their excellent optical properties.Chapter 3: Simply introduced the concept of retro-reflection, retro-reflection materials, the fabrication of traditional glass sphere and the possibility of the application of GRIN polymer micro-sphere on retro-reflection.

第三章：介绍了回归反射的概念、回归反射材料的现状；研究了用麦克斯韦鱼眼微球制作回归反射材料的可能，并与传统的均匀折射率玻璃微球回归反射材料的性能作了比较，得出将麦克斯韦鱼眼微球用作回归反射材料不仅可以大幅度降低原先对材料折射率的过高要求，还可明显提高回归反射的效率的结论。

In this paper, the current states of research about the basic theory of stationary state perturbation method are firstly reviewed, on base of them, and studied some physics issues mainly about hydrogen atom. The stark effect of the energy level (n = 4) of hydrogen atom is calculated and the stark effect of three dimensional hydrogen atom is discussed by the use of the parabolic coordinates, then the perturbative matrix elements for each energy level are given.

本文首先综述了关于定态微扰论基本理论的研究现状，在此基础上利用定态微扰论对某些物理问题，主要是对氢原子问题展开了研究，计算了氢原子n=4能级的斯塔克效应，并利用抛物线坐标法求解了三维氢原子的斯塔克效应，给出了氢原子斯塔克效应中微扰矩阵元的普遍公式。

In order to derive the 〓 interaction, wegeneralize the Fierz transformation from SU(N ≤ 4) scalar and pseudoscalar to SU tensor and point out that the 〓 interaction may beuseful in an extended quark potential model calculation.

为了理解在重子中存在着的自旋-轨道力的压抑，我们用微扰QCD的方法推导了四阶夸克-夸克之间的相互作用，并提出了用费曼图技术去计算非协变的含时微扰图的方法。

Duke University researchers used two genetic research shows that Nosema is clear from the sexual evolution of the fungi, and in particular with the bacteria closely related to the joint, they found that Nosema of more than 2000 genes, 33 Gene junction with the bacteria, these chromosome markers show that Nosema bonding with the bacteria is likely to have a common ancestor, and it with other known contact fungi grew apart.

杜克大学的研究人员使用两个基因研究证明，微孢子虫明显地从有性的真菌中进化，并且尤其同接合菌密切相关，他们发现，微孢子虫的2000多个基因中，有33个基因同接合菌一样，这些染色体标记显示，微孢子虫同接合菌很可能拥有共同的祖先，并且，它同其他已知的真菌联系更为疏远。

The article first theoretically analyzes the principle that microcavity reduces threshold 、changes resonant modes of output light and enhances unidirection of the random laser.Then study the structure parameters of different microcavity by transfer matrix.Based on the theory of Maxwell equations and the rate equations, analyze the principle that microcavity reduces the threshold by FDTD method: Changing the confined position,reducing relaxation time and increasing reversing particles, also simultaneously study the influences of the threshold and output light modes by different microcavities and random intensity of random medium.

首先从理论上分析了利用微腔降低随机激光器阈值、改变出射光振荡模式、提高出射光准直性的原理，然后利用传输矩阵法模拟研究了不同的微腔应具有的结构参数，最后以麦克斯韦方程和速率方程理论为基础，利用时域有限差分法分析了利用微腔降低阈值的原理：改变局域化位置、缩短弛豫时间及增大粒子数反转，同时也模拟研究了微腔、随机介质的随机强度对阈值及出射光波模式的影响。

The WHO guideline sets the bar at 20 microgrammes.

而世界卫生组织的指引上限是20微克。

Only1 per cent of Chinese urban residents live in cities withconcentrations of such particulate matter below 40 microgrammes percubic metre of air.

只有1%的中国城市居民生活在颗粒物浓度低于每立方米空气40微克的城市中。

In2003, 58 per cent of Chinese city dwellers were exposed to particulatematter of more than 100 microgrammes,"twice the annual averagestandard in the US", the report says.

该报告称，2003年，58%的中国城市居民暴露在颗粒物浓度高于100微克的环境中，&是美国年均水平的两倍&。

This work mainly studies the application of MAXWELL fisheye micro-sphere-lens of virtual parameter with gradient refractive index distributing on dispersion material and the characteristic of MAXWELL fisheye lens with virtual parameter.

本工作研究的主要是具有梯度折射率(Gradient refractive index，GRIN)分布的虚宗量麦克斯韦鱼眼微球的光学性质、在表面漫射材料上的应用和虚宗量麦克斯韦鱼眼微球透镜的性质特点。

Those that have been crowned with full success have been long meditated upon, and carefully arranged; such, for instance, as the escape of the Duc de Beaufort from the Chateau de Vincennes, that of the Abb Dubuquoi from For l'Evque

那些最终成功的人，都经过了长期的计划和小心安排的，举些例子来说，如波福公爵之逃出万森堡，杜布古神甫之逃出伊微克堡，拉都特之逃出巴士底监狱。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了