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It is suggested that the stratum intermedium participate in the differentiation of ameloblast and formation of enamel.

中间层细胞的增殖和凋亡及其TNSAP的表达与成釉细胞具有相关性,提示中间层细胞有可能参与成釉细胞的分化及釉质形成。

Tectonic subsidence play dominant role in their geometric shapes, basin fillings, sequence evolution and sediment distribution in the Wushi Sag. Outline of the sequences are in shape of box-wedge or sheet-wedge and boundaries of sequences are varied from bilateral fault to monoclinal fault overlap, so that the sequences show distinct semigrabens which overlay in different ways. Seven sequences were formed in different stage of tectonic evolution. The sequence of SQ1 formed in initial rift stage and deposited alluvial sequence. Sequences SQ2-SQ4 developed in intense rift stage and sediment lacustrine sequence. Sequences SQ5-SQ7 formed in late period of rift before thermal subsidence and deposit mere and delta sediment. The place adjacent to the synsedimentary fault is the subsidence center and depocenter; meanwhile, controlling fracture migrates in horizontal made subsidence and sedimentary center of the sag changed.

构造沉降是控制层序几何形态,充填叠置方式、演化及沉积体系分布的最重要因素:凹陷由多个半地堑在不同层序发育时期以不同方式叠置联结而成;受断层控制,层序外部形态有箱状-楔形、楔形-席状披覆型,边界终止方式有双断终止型、单断终止超覆型;不同构造演化阶段层序内部充填的沉积体系各具特征,初始断陷阶段的SQ1沉积冲积层序,强烈断陷阶段的SQ2-SQ4充填湖相层序,晚期断陷阶段SQ5-SQ7内部充填浅湖和河流三角洲沉积;同沉积断层陡坡带沉降迅速、可容纳空间快速增长,是凹陷的沉积和沉降中心,断陷期主控断裂活动时间和空间的变化导致了凹陷沉积和沉降中心的迁移。

The coherent inversion method and rootmeansquare velocity conversion method are jointly applied to build the interval velocity model. The tomographic imaging technique is used to optimize the geologic model. Based on the research of depth migration method and comparison of migration effects, the approaches and steps for building accurate migration velocity field are summarized, thus greatly improving the effects and efficiencies of velocity modeling and migration imaging.

采用相干反演法与均方根速度转换法联合建立层速度模型,利用层析成像技术优化地质模型,通过深度偏移方法研究和偏移效果的对比,总结了建立精确偏移速度场的方法和步骤,使速度建模和偏移成像在效果和效率上都得到了很大的改善。

It is well known that the large lattice mismatch (16%) and thermal expansion coefficient mismatch between GaN and sapphire substrate are the main origins of TDs. By new growing technique of LEO, we acquired high quality GaN films almost free of TDs. The stress characteristics in GaN films with MLTB growing technique is dependent on growing systems and conditions, and the changes of stress and dislocation density are rightabout; Combining buffer layers of high temperature and low temperature is first developed to growing GaN films with low dislocation density, and the mechanism of lowering TDs density is that the first buffer layer of high temperature can make nuclear in second buffer layer of low temperature bigger. This technique also can restrain yellow luminescence effectively.

众所周知,晶格失配和热应力失配是GaN异质外延中位错产生的主要原因;为此,我们对几种降低缺陷的MOCVD外延生长方法进行了新的尝试,其中尝试了侧向外延生长技术,得到了低位错密度(小于10〓/cm〓)、高质量的GaN外延层;尝试多低温缓冲层法,发现材料中的应力特性与生长系统和生长条件有关,材料中的应力与位错密度按相反方向变化;首次尝试高低温联合缓冲层法,材料中高温缓冲层可以使随后的低温缓冲层中成核颗粒增大,从而导致随后高温GaN外延膜中位错密度降低,并且能够有效地抑制黄光峰。

The types GCPS-20 drill the machine is a kind of compound typemulti-function drill the machine, in order to adapt the our countrydevelopment and demands of the deep foundation and consecution walland marine hydraulic engineering, the bridge engineering, combinethe big caliber to drill the machine to infuse to note the stakeand the characteristics of underground continuous wallconstruction, in order to solve to become the bore but research tomanufacture in complicated geologic strata, hard rock, significantexaltation of ability of special egg stone layer, sill, the stonelayer construction efficiency, is a more economic valid method invariously become the bore method.

GCPS-20型钻机是一种复合式多功能钻机,为适应我国深基础工程和连续墙以及水利工程、桥梁工程的发展与需要,结合大口径钻机灌注桩和地下连续墙施工的特点,为解决在复杂地层、硬岩中成孔而研制,特别卵石层、基石、漂石层能大幅度提高施工效率,在各种成孔方法中是比较经济有效的方法。

After 45 days of having tissued, the record showed that the three parts flake of L.davidiivar Cotton did not have the same differentiation ability in the same matrices.The alive rate in each matrices is: the middle is the best, the outer is the worst and the innner is better.

培养45天时统计了各种基质中的成苗情况,结果表明,在16种基质中,每一种基质都证明了兰州百合内、中、外三层鳞片在同一基质中的分化能力不同,每一种基质中中层鳞片成苗率最高,内层次之,外层最差。

The analysis of weathering crust characteristic of lower Permian Kalagang group in Malang sag, Santanghu basin suggests that the paleo-weathered crust includes weathering clay ground, strong weathering rubble layer, weak, weathering block-stone layer and unweathered rock layer in vertical and was distributed under the unconformity interface and presented in planar manner horizontally.

对三塘湖盆地马朗凹陷下二叠统卡拉岗组风化壳特征的分析,认为古风化壳纵向上分为风化粘土层、强风化碎石层、弱风化块石层以及未风化岩石层等,平面上呈面状分布于不整合界面之下,剖析该区古风化壳成藏地质条件和构造演化,探讨了可能发育油气藏类型及与风化壳的关系,并指出了该区下一步下二叠统卡拉岗组有利的勘探目标是在P2t剥蚀线与P1k剥蚀线之间范围内,其次为卡拉岗组剥蚀线以东地区。

A micro-macro transition method is also proposed, and this method allows one to determine the classical in plane effective moduli for a heterogeneous micropolar material, which relates the average symmetric stress and strain.

由于界面层厚度很小,并且界面层具有复杂的微观结构,论文接着将界面层材料等效成高阶微极介质,分析了在这种情况下界面层对复合材料的面内宏观性能,以及其局部应力分布的影响。

The results were:① The number of pCREB immunoreactive neuclei and total amount of pCREB in the subnuclei of rat amygdala, Dentate gyrus and Cornu Ammonis 3(CA3) were increased after FS.

在DG颗粒细胞层内,对照组的pCREB阳性细胞核数目很少,成线状散在分布;而FS后pCREB阳性细胞核的数目明显增多,成带状密布于整个DG颗粒细胞层。

This stone pagoda was built by using rocks as bricks. It was originally built as a 9-story pagoda but only 3 stories remain now. It is a part of very important data in the studies of the Silla Stone culture and development.

该塔系将石块打磨成砖块样后堆成,原来为九层,现仅存三层,为了解新罗石塔文化的发展史提供了十分珍贵的资料。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。