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Purple teeth are red-based Ukrainian almandine; red-based, there are rose-colored, concentrated red, black and red of the pyrope; a green, yellow, yellow, and green, green in grossular; a green uvarovite so.

牙齿红紫色的乌克兰铁铝榴石，红色的，有玫瑰色，集中红色，黑色和红色的镁铝榴石，绿色，黄色，黄，绿，青（乌拉尔祖母绿的钙铝榴石）； 1绿色钙铬榴石等。

Concentrated natural latex, no plasticizers,without silicone oil and ammonification.

采用100%浓缩天然乳胶，无增塑剂，不含硅油，氨化物。

In concentrated solution of cobalt salt precipitation system, the effects of reagents of ammonia carbonate and ammonium oxalate was studied respectively.

溶液中NH4+的加入，在高 pH值条件下，存在钻氨的络合反应和钻的沉淀反应，草酸钻仍保持针状形貌：在低pH值条件下，随着NH4十加入量的增多，草酸钻形貌变得粗短，长径比、粒度减小；最后呈方形，松装比重增加。

Thermal and thermo-oxidative degradation of chitin with ammonium nitrate,ammonium sulfate and concentrated sulfuric acid were studied.

讨论了硝酸铵、硫酸铵和浓硫酸对自制甲壳素热降解和热氧化降解过程的影响。

From 1800 to 1814, Ampere concentrated his efforts primarily on mathematics.

从1800年到1814年，安培主要集中努力在他的数学方面上。

First neurotrophic factors could be concentrated within nerve conduits. Second fibre-bridge to anastomose two parts of nerve gaps could be formed ecxactly. Third operation of nerve conduits could be transplanted easily.

神经导管一方面能使神经营养因子在导管内积聚，浓度增高，另一方面引导神经缺损两端准确对合，同时导管的植入操作简单，可以减少手术对神经的损伤。

Pretreatment can take full advantage of the local rock layers or the stability of their own, linked with the excavation layered reinforced concrete spraying.soil and debris to avoid the small joints broken rock slope collapses, and earth pressure anchor plate passed by the concentrated suspension bolt,bolt through the anchoring force of earth pressure balance.

可以充分利用岩土层自身或预处理的局部的稳定性，随基坑开挖分层挂钢筋网喷射砼，以避免土层碎片及岩石边坡小的节理破碎坍塌，并把土压力传给锚板，由锚杆集中受力，通过锚杆的锚固力平衡土压力。

This paper has three main innovations: First, the innovation of research perspective. Anciently, the research of RMB revaluation\'s effects mainly concentrated on the macro or middle level.

本文的研究不但对拓展汇率政策的有效性研究具有理论意义，而且对中国的汇率政策、贸易政策以及对外开放模式的选择都有重要的现实意义。

In this thesis,based on the DFT+NEGF first-principles method,we construct a lead-molecule-lead sandwich system with single benzene-based molecule to investigate the relationship between the structure and properties of the molecular devices and the factors that influence properties of the molecular devices.Our computational investigations on these molecular devices are primarily concentrated on the effect of contact geometry between molecules and electrodes,the effect of side groups,the effect of different torsion angle between two phenyl rings and the effect of external electric field.This thesis consists of five chapters:In Chapter one,we mainly introduce the research background and development of the molecular electronics,including the experimental fabrication of molecular electronic components and theoretical simulation methods.Afterwards we discuss the questions that need to be solved in this area.Finally,the main contents of this thesis are listed.In Chapter two,we introduce the theoretical methods used in this thesis, including the main first-principles calculation methods,i.e.,the Density-Functionmethod and nonequilibrium Green\'s function.

本论文拟采用密度泛函理论和非平衡格林函数相结合的第一性原理计算方法，选取苯基小分子作为研究对象，构建了金属电极/有机小分子/金属电极三明治结构体系，系统地研究了苯基分子器件结构的改变与分子电输运性质之间的关系以及影响分子器件电输运性质的相关因素，其中重点研究了分子与电极间可能的接触结构改变、官能团、分子间的扭转角以及外电场对苯基分子电输运性质的影响，本论文主要包括以下五个章节的内容：第一章为综述部分，主要介绍了分子电子学产生的背景、分子器件的研究意义、当前研究分子器件的实验和主要理论方法，以及目前在研究分子器件中存在的一些问题，最后给出了本论文的主要研究内容和技术路线。

The bulk of Chinese investment in Africa is related to oil, concentrated in Angola, Sudan and Nigeria.

中国在非洲大部分的投资均涉及到石油，集中在安哥拉、苏丹和尼日利亚等国。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48