相对于

This is true for an arbitrarily small electron-phonon coupling within the mean-field adiabatic approximation, which treats the phonon degree of freedom classically.

在电子半满情况下，晶格形成二聚化，基态具有二聚化长程序；在平均场近似下，声子自由度是经典的，对于任意小的电声耦合，都有Peierls相变，基态是二聚化的绝缘相。

Based on a review of the history of seismic stratigraphy, sequence stratigrapy, and seismic sedimentology, this paper discussed the status and future trend of the seismic sedimentology, and pointed out that 90° phase transformation and frequency division interpretation are just the two technical means rather than key techniques for seismic sedimentological studies.

结合地震地层学、层序地层学和地震沉积学的发展历程对地震沉积学的现状和趋势进行了探讨，认为90°相位转换和分频解释仅仅是地震沉积学研究的技术手段，而不是其关键技术；对于地震同相轴的穿时性问题，也仅存在于3级或4级层中，并且这种穿时性与"沉积物体分配空间"和"相异作用"有关。

It was also found that the film of smaller grains corresponded to a smaller lattice constant of the garnet structure, which implied that fewer Bi〓 ions substituted into the dodecahedral sites in the garnet, due to the fact that the smaller grains resulted in more grain boundaries, thus leading to more serious Bi segregation in the grain boundaries.

分析表明，细小的晶粒意味着薄膜中含有更多的晶界，这样将导致Bi组分在晶界上的偏析较显著，而进入石榴石结构中氧十二面体间隙的Bi〓较少，对于Bi，Al∶DyIG来说，石榴石相晶格常数与{Bi〓}〓呈正相关关系，由此可以解释具有细小晶粒的薄膜对应较小的石榴石相晶格常数。

The paper also analyses other single phase bridge half controlled rectifier with equivalent freewheel diode and draws work wave of each part, this can help to understand fundamental of this kind of rectifier.

对于另一种自带等效续流二极管的单相半控桥，文中给出了各部分工作波形，可进一步加深对单相半控桥的理解。

Influenced by tectonic movement, there were no sediments in the area from Oligocene to Miocene. Appearance of marlite in the Pliocene, especially in Yaqueling region, proved localized depositing environment forming, for which there had only few amount of terrigenous matters to supply. Sedimentary facies association of alluvial fan, fan delta and inland lake appeared at the early and middle stage of lower Pleistocene, and association of fan delta and inland lake appeared at the later stage of lower Pleistocene and the early stage of middle Pleistocene. Net-veined laterite appeared at the top of lacustrine deposit, which reflected pedogenesis taking place after the end of deposition. Such evolution history proves that there had no lager river system traversing this area before the early stage of middle Pleistocene.

对于江汉盆地西缘宜昌地区来说，其沉积及古地理演化表现为：早白垩世为受天阳坪断裂控制的内陆湖泊沉积环境，沉积中心在天阳坪断裂的北侧，此时几乎不存在来自黄陵地区的水系；晚白垩世同样为受断裂控制的内陆湖盆环境，但湖盆面积扩大、断裂活动减弱，且后期出现成化湖相沉积；第三纪早期盆地由断陷盆地转变为坳陷盆地，同时石膏的出现代表了局限咸化湖盆的存在；渐新世—中新世，受构造影响，缺失该时期的沉积；上新世时在鸦鹊岭一带出现的泥灰岩沉积反映了陆源物质供应不足的局限沉积环境的存在；早更新世早中期为冲积扇—扇三角洲—内陆湖泊沉积，早更新世晚期—中更新世早期为扇三角洲—湖相沉积，后期出现沉积结束以后的网纹红土化作用。

For the liquid, the DMF is adopted as internal standardand and with fixed phase of OV-101 of 15 meters capillary column, vapour-phase chromatography FID is successfully used to have a quantitative analysis on mesitylene and acetic acid.

对于液体，采用以DMF为内标物，固定相为OV-101的15米毛细管柱，使用气相色谱FID成功的进行了均三甲苯和乙酸的定量分析。

These methods can make use of redundant switching status in order to make capacitors of different cells connect in parallel and to make energy transfer between adjacent cells in different switching status. Carrier phase-shifted PWM methods are further studied.

最后，本章提出了载波移相PWM方法对于新型拓扑的特殊意义，即采用移相控制，充分利用新型拓扑的各种开关冗余状态，通过变流器各级单元电容之间的并联状态补充能量，可以有效改善基波周期内各级单元的电容电压平衡问题。

Perhaps most people are now persuaded that it is possible for a man to have volitional control of his muscles and also to know the physical character of his movements and their consequences for himself and others, and yet be unable to resist the urge or temptation to perform a certain act ; yet many think this incapacity exists only if it is associated with well-marked physiological or neurological symptoms or independently definable psychological disturbances .

也许，大部分人现在相信，对于一个人来说，这样的情况是可能的，即对其肌肉有自愿的控制，并且也知道他的运动及其对于他自身与他人的后果的物理特性，但却无法抵制实施某一特定的行为的迫切要求或诱惑，（这样的情况是可能的，即一个人可以对其肌肉进行自主的控制，并且也明白自己的动作的物理特征以及对于自己和他人所可能产生的后果，但就是抵制实施某一特定的行为的迫切要求或诱惑；）而且，许多人认为，只有其与得到了适当标示的生理学的或神经学上的症状或者可单独界定的生理错乱相联系，才存在这种无能。

Through designing of composition and structure of the bioactive graded coating,innerstress and its distribution in the coating were analyzed and calculated, the resultsshowed that when composition distribution coefficient n was 1.5, a reasonable stressdistribution could be got, that was at the beginning of deposition the suspension containingrichly BG granules was used so that a rich BG granules layer, a good transitional layerbetween BG layer at the bottom and the coating could be obtained at the titanium alloy side,the bottom of the coating; the stress value near the interface and surface and its character,pressure stress or tensile stress, were decided by the character of its composition itself.Changing composition distribution coefficient n could only change the variation tendency ofstress in the coating, but did not change the stress distribution rule in the coating. Thethinner the coating is, the sharper stress variation in the coating is, which does not mean thatthicker coating is better because the thicker the coating is, the little the permitteddeformation of coating is, so the coating thickness should be thinner, for example, about50μm for bending applications, but for applications only bearing pure shear stress, such asroot of tooth implant, the coating can be thicker little, for instance, about 80～100μm. The study on electrification characteristic and electrophoresis deposition of HAand BG granules in aqueous and non-aqueous solution system found that EPD almost didn'toccur in aqueous solution system. However, because HA granules take position charges inabsolute alcohol, a homogeneous EPD be carried out on the cathode titanium alloy slice, but taking negative charge in absolute alcohol the BG granules not be deposited on the cathode. A guided HA crystallizing, 100～300nm, on surface of the BG granules be realized by metathetical reaction, which cover BG granules with HA microcrystals and make the covered BG granules taking position charges in absolute alcohol, sequentially realize the EPCD of the BG and HA granules on the cathode, so it is feasible to make a titanium alloy/BG/HA bioactive graded coating by making use of EPCD technology. The corrosion experiment of rich boron bioglass coating and plasma spray coating showed that split phase, rich boron and rich silicon phase, occurred during its preparation. In basic medium the corrosion behavior of 〓 BG coating showed uniformity corrosion, the corrosion mostly occurred at rich boron phase area, therefore batch formula design of BGshould avoid the occurring of split phase. The corrosion appearance of plasma spray coatingappeared a non-uniform corrosion, mostly occurred at the edge of the laminated HA moltendrops, and emerged an accelerated corrosion tendency, which will easyly lead to corrosioncrackles extending to the interface and the happening of osmotic interfacial corrosion, thatmay be one of the major reasons leading to the coating cracking-off in the later period. Thetesting results of thermal expansion coefficient of 〓 and 〓BG showed the thermalexpansion coefficient of 〓 BG matched with that of titanium alloy better, and 〓 BG couldsinter with titanium alloy into densification enamel layer at low temperature (720℃).

将Ti6Al4V合金在1000℃下进行真空热处理会降低其力学性能，且合金内的V元素会向表面富集，因此，钛合金真空热处理和表面涂层的烧结温度不能过高，即应低于其相转变点；通过对生物活性梯度涂层的组成和结构的设计，分析和计算了梯度涂层内的应力大小和分布，结果表明：对于本研究，当成分分布系数n=1.5时，可以获得较合理的涂层力学性能，即在沉积开始时，采用富含BG颗粒的悬浮液，以便在钛合金侧获得同底层BG有良好过渡的富BG涂层；梯度涂层界面和表面的应力大小、性质由材料组成本身的性质决定，改变成分分布系数，只能改变涂层内应力变化的趋势；涂层的厚薄不影响涂层内的应力分布规律，但涂层越薄，涂层内的应力变化越快，但这并不意味着涂层越厚越好，因为涂层越厚，涂层允许的变形越小，对于应用于弯曲受力部位的涂层而言，涂层应薄一点为好(50μm)；而对于仅纯受剪切应力的部位，如牙根种植体，涂层可适当加厚(80～100μm)；通过对HA和BG颗粒在水溶液体系和非水溶液体系中的带电特性和电泳沉积的研究发现，它们在水溶液体系中很难发生电沉积；在无水乙醇溶液中，HA颗粒带正电，可在阴极钛合金片上发生均匀的电泳沉积，而BG颗粒则带负电荷；利用复分解反应法，可以制得100～300nm的HA，通过诱导HA在BG颗粒表面结晶，可对BG颗粒进行表面包覆，获得了被HA包覆的BG颗粒，改变了BG颗粒表面的带电特性，使BG和HA颗粒在无水乙醇中均带上正电荷，从而实现了HA和BG颗粒在阴极上的共沉积。

The writings of the middle period include Gorgias (a consideration of several ethical questions), Meno (a discussion of the nature of knowledge), the Apology (Socrates' defense of himself at his trial against the charges of atheism and corrupting Athenian youth), Crito (Socrates' defense of obedience to the laws of the state), Phaedo (the death scene of Socrates, in which he discusses the theory of Forms, the nature of the soul, and the question of immortality), the Symposium (Plato's outstanding dramatic achievement, which contains several speeches on beauty and love), the Republic (Plato's supreme philosophical achievement, which is a detailed discussion of the nature of justice).

中期这部分的著作包括《高尔吉亚篇》(关于几个伦理问题的讨论)，《美诺篇》，《申辩》(在法庭上苏格拉底自己对于指控他无神论和腐蚀雅典青年的罪名的辩护)，《克里托篇》(苏格拉底对于顺从城邦法律所做的辩护)，《费多篇》(苏格拉底之死，他讨论了&型相论&，自然灵魂和不朽的问题)，《会饮篇》(柏拉图最突出和生动的作品，它包含几篇对于&美&和&爱&的演讲)，《理想国》(柏拉图最高的哲学成就，它详细的讨论了关于&正义&的问题)。

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