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The wave function of the phonon is assumed to take thecoherent state,a self-consistent integrodifferential equationsatisfied by the electron wave function is derived.Solving for thisequation,we get the polaron ground-state energy E=-0.1085α2, whichis very close to these of previous strong-coupling theories.In chap.4,we will apply approaches developed in chaps.2 and 3 to discuss theimportant two-dimensional(2D)polaron problem.
把声子部分取成相干态的形式,我们推导出电子波函数所满足的非线性的微分积分方程,求解这个方程,我们得到基态能为E=-0.1085α2,它与以前的各种强耦合理论的结果非常接近,在第四章中,我们利用在第二,三章中发展的方法讨论很重要的二维极化子问题。
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The Balcony of the Mediterranean is just a few minutes away and the San Jaime Church is also close by.
您可在我们的相关条款中找到更多详情。
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Results showed that biomass of the ground part of Juncus Effuses was inhabited to a certain degree. When the dosages of the heavy metals added to the soils were close to Grade II Criteria of the State Soil Environmental Quality Standard (GB15618-95), Juncus Effuses could still grow normally in appearance though its yield decreased by 10%, however biomass of the underground part was not much affected.
实验结果表明:5种重金属复合污染对灯心草地上部生长有一定程度的抑制作用,在土壤环境质量二级标准上限值处灯心草地上部生物量减产9.15%,0%,但地下部生物量减产趋势不明显。
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Also, the Gnome area, Fizzcrank Airstrip can be seen here, which is overshadowed by a crashed Necropolis, similar the Naxxramas. Players can venture inside this crashed building to complete single-player quests. This is close to a huge Scourge base called the Temple of En'kilah.
另外,在侏儒区,Fizzcrank飞行跑道被一个类似naxx的天灾大战舰堵塞了,玩家可以该建筑完成单人任务,它很类似于一个叫做En'kilah之庙的巨型天灾基地。
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Aimed at the study of Lauraceae system classification in domestic and overseas,genetic diversity and genetic variation between Cinnamomun micranthum Hayata natural populations and Ex-situ conservation poputations and relationship among Its Close Relative Species of Cinnamomum camphora Presl,Cinnamomum burmannii(C.G.etTh.Nee) Bl,Phoebe bournei Yang. Litsea subcoriacea Yang et P.H.Huan. Neolitsea aurata Koidz,Lindera communis Hemsl and Persea Americana Mill.were studied by inter-simple sequence repeats molecular marker.The research aimed at genetic variation between Cinnamomun micranthum Hayata populations,so that can offer the molecular theoretic and practical method for conservation and utilization of Cinnamomun micranthum Hayata populations.
针对目前国内外对樟科植物系统分类的研究现状,本研究采用ISSR分子标记技术对樟科沉水樟天然居群和迁地保护居群的遗传多样性进行研究,从分子水平上分析沉水樟种群的生态遗传及其遗传变异规律;同时利用ISSR分子标记技术比较沉水樟及其近缘种香樟、阴香、闽楠、桂北木姜子、新木姜子、香叶树、鳄梨在分子水平上的亲缘关系,揭示这些树种在樟科植物系统进化中的作用与地位,探讨沉水樟及其近缘种的遗传多样性及其分化格局,为樟科植物的系统分类提供分子水平的依据。
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However,in the time of ZhanGuo,both the Confucius and Mohist School are well known,the close logicity of Mohist School make the theory of Confucius pale by comparison, so,the school of ZiSi is brought about.
然而,在儒墨竞显的战国时代,墨家学说的逻辑严密性使儒家学说显现出先天的不足,儒家学说面临着严峻的挑战。
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AIM: The incidence of malrotation after femoral shaft fracture treated with close reduction and interlocking intramedullary nailing is high. To judge the degree of rotational deformity in fracture of shaft of femur by C-arm X-ray machine is necessary in the repair of tissue construction.
目的:采用闭合复位带锁髓内针置入固定治疗股骨干骨折,术中常出现远端旋转畸形,利用C形臂X射线机并以健侧NH角(股骨头-颈轴线与水平台面的夹角)作为参照物,判断骨折端旋转移位程度是组织构建修复过程中必须解决的应用技术。
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For example: peripherin-layer is made of nuphtheroquinon-xylenediol azide-anti-alcohol (microspectroscopic catalysical sensitivity range of up to 320 ~ 460nm), PS print, when you choose to use iodine gallium light, exposure time, simply by 20s with high pressure mercury lamp above the 30s, because although the two lamps and the spectral 300 ~ 460nm scope, but sulfonylated spetroscopy gallium light emission from 400 nm wavelength in close to the section of the distribution of light energy and light energy than much of high pressure mercury lamp, uniform is also much larger, and with this kind of formulation-peripherin-catalysical spetroscopy, emiting anastomasis sensitivity more productive.
感平层是用邻二叠氮醌型感平剂(平谱不分平感量边界为320~460nm)的PS版,晒版时若采取碘镓灯,曝平工夫只需20s把握,用矮压水银灯则给30s以上,这是因为:虽然两栽灯具的平谱成不分都在300~460nm边界边,但磺镓灯不收射的平谱洋挨近400nm波不幼段的平能量的不分布及平能量比矮压水银灯平均得众也不小得众,并且与这栽感平剂型的平谱不分平感量更为吻不分,不收平效果也更矮的原由。
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Taking its name from a particular species of ray, the Mobula, which can launch itself out of the water several meters, the futuristic vehicle, or an Ekranoplan, employs the high-lift, low-drag aspects of ground effect by moving close to the surface, allowing a high speed, spacious interior and an efficient mileage.
以它的名字从一个特定物种的射线,在Mobula ,它可以发射本身出水面数米,未来的车辆,或Ekranoplan ,采用了高扬程,低阻力方面的地面效应的接近表面,使高速,宽敞的内部和有效率的里程。
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And we find out that the stability of generate NAIs by imitate pulsed corona is much better than continued discharging. If we close the electric field for 30sec and restart it for 1 minutes.
关闭电场30sec后再重新开启电场一分钟的方式可让空气负离子浓度维持在4.0×105 ions/cm3以上超过30分钟。
- 推荐网络例句
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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.
索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。
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The relationship between communicative competence and grammar teaching should be that of the ends and the means.
交际能力和语法的关系应该是目标与途径的关系。
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This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。