不同构造的
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Dated from Proterozoic to Mesozoic, they have poly-circle characteristics, found from one tectonic circle to another, which is very rare in the worldwide orogens. This reveals that the orogen and stable area of the world, the mantle and crust states of the Proterozoic and Phanerozoic are different in tectonic evolvement and dynamic process and that the rapakivi granite of the Qinling-Kunlun is a kind of orogenic granite different from the stable area of the Proterozoic.
它们出现在每一个大的造山旋回晚期,即向另一个构造旋回的转折期,这在世界造山带中是十分罕见的,反映出世界上造山带与稳定区元古宙和显生宙的地慢与地壳状态是不一样的,有着不同的构造演化历史和动力学过程,表明秦岭-昆仑地区的环斑花岗岩是一种有别于元古宙稳定区的造山型环斑花岗岩。
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In this paper, we give explicit constructions and formulations for harmonic maps from R1,1 into classical real semisimple Lie groups by using Darboux transformation. We also discuss pluriharmonic maps from complex manifoldsinto symmetric spaces and Willmore surfaces in Sn. By converting geometric conditions satisfied by these maps into integrable systems, and using the the-ory of integrable systems, we give explicit constructions for pluriharmonic maps from complex manifolds into symmetric spaces and the Willmore surfaces in Sn respectively. Finally, we classify hypersurfaces in Sn+1 with three distinct prin-ciple curvatures and zero Mobius form using the theory of Mobius geometry. The paper consists of four chapters.
本文首先利用Darboux变换的方法给出了从Lorentz平面R~(1,1)到经典实半单Lie群的调和映照的具体构造,并给出其显式表示;其次研究了复流形到对称空间的多重调和映照及球空间S~n中Willmore曲面,将这些映照所满足的几何条件转化为可积系统,然后利用可积系统理论分别给出复流形到对称空间的多重调和映照与S~n中Willmore曲面的构造;最后利用Mōbius几何的理论给出S~(n+1)中具有三个不同主曲率且Mōbius形式为零的超曲面的分类。
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Since the lengths of the line segments and the angles between line segments are treated as representation parameters, it is convenient to construct energy function and to deal with displacement and length constraints. Based on this advantage, a parametrical model for human body is proposed, which can easily produce human body models with different feature sizes. The above method is just suitable for polylines. Therefore, a generic deformation method for both discrete curves and surfaces is presented. The energy function is constructed by analyzing the relationship of the points before and after deformation. Together with the displacement constraints, the deformation problem is converted to a convex quadratic programming. A necessary condition for constraint points and a sufficient condition for the uniqueness of solution are given. The proposed method can be combined with skeleton-driven animation to control the deformation.
将线段长度与线段之间的角度作为表示参数,既有利于能量函数的构造,又便于处理位移约束和长度内蕴约束条件,利用这一优势,将其应用于三维人体的参数化建模,可以方便地产生具有不同特征尺寸参数的人体模型,由于这种方法只适用于折线变形,具有较大局限性,因此,本文进一步提出一种较通用的离散曲线曲面变形方法,通过分析变形前后的位置关系来构造能量函数,再加上位移约束条件,将变形问题转化为一个凸二次规划问题,并且给出了约束点应满足的必要条件及模型解唯一的充分条件,这种方法还可以与骨架驱动变形的思想相结合,能更好的控制变形。
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A number of geological and mineral composition and geochemical investigations indicate that the deep geodynamics process and mantle characteristics of middle Jurassic gabbros suits from south Jiangxi province are distinguish from Cretaceous gabbros suits from coastal belt of Fijian province, the former are related to mantle upwelling and lithosphere extension, the later are related to subduction and lie on back-arc basin in tectonic environment.
对赣南车步辉长岩类的地质特征、矿物学和地球化学特征进行了研究,着重讨论它与沿海辉长岩类构造环境和源区性质的不同,研究表明它可能是中国东南部中侏罗世软流圈上涌、岩石圈伸展和地壳裂解的产物,而沿海白垩纪辉长岩类的构造环境是弧后拉张盆地;车步辉长岩类的源区可能是未受到明显俯冲组分影响的富集地幔,而沿海白垩纪辉长岩类的源区可能包含较多俯冲组分。
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However, to construct a tensor product orthonomal wavelet basis in L〓, 2〓-1 different functions are used. Furthermore, it is concluded that the family, obtained by dilations and translations from this radial wavelet as well as their linear combinations, can constitute an orthonomal basis in L〓. The conclusion is a major breakthrough in multidimensional wavelet analysis.
从而得到:由一个径向小波的伸缩、平移系及其线性组合可以构成n维平方可积函数空间L〓的规范正交基,这个结果将当前利用张量积方法构造n维正交小波基所需要的2〓-1个不同的函数降为仅需要一个径向小波函数,这在理论上是一个重大突破;构造了同时具备局部支撑和无穷次连续可微性质的高维不可分小波的例子,这是不同于I。
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The formation of high-grade ore body has undergone a complex process.
在复杂的成矿过程中,矿床所形成的地质构造、地球物理及地球化学等特征构成清晰的找矿要素,从不同尺度和有效性的要素系统,构建出以&中基性钙碱性火山碎屑岩+高极化高重力+多级复杂褶皱构造+硅化-绿泥石化+孔雀石化&为核心的矿床综合找矿模型。
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The influence of machine auto scoring results of different data standard processing and different semantic space construction methods are compared basing on the analysis of 136 college students' writing test paper.The effect of Singular Value Decomposition and the rules for definition of the K numbers of singular values are discussed.
从136名大学生的短文写作试卷着手,对比了不同的语义空间构造方法和不同数据标准化方法对机器自动评分结果的影响,探讨了SVD的作用和奇异值个数K的取值规律,比较了LSA对不同类型学生的短文写作自动评分结果的差异。
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Cosmic spherules were discovered among artificial heavy mineral grains in Changzhogou formation, Taoyuan, Lunxian;Changzhogou, Jixian of Hebei and the Ming Tombs , District of Beijing.
河北滦县、蓟县、北京十三陵三个地方的常州沟组宇宙尘是在人工重砂的重矿物中发现的,产在古老沉积岩地层中的砾岩和砂岩里,大部分是铁质宇宙尘,形态各异,表面构造多种多样,内部构造各有不同,具Fe—Ni金属,核与壳的化学元素分布不匀匀,化学成分与深海宇宙尘相似。
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Such doubts havesitimulated the researchers'curiosity and start to explore the students' terms This research proceeds by observation interview test using learning sheets and etc The purpose is to explore students' terms of scientific concepts sources of terms connections between students' usage nomenclature and chooses of usage The results of the research are as follows: 1 There are five kinds of naming principles for students' terms of scientific concepts: appearance habit function replacing and sound Appearance principle contains three categories: color shape and partial construction; habit principle contains custom and ability; replacing principle contains reality and non-reality 2 Students' terms of scientific concepts come from two ways: self-acquisition and learning through senses The former way is only a bit more common than the latter 3 There are three different relationships between students' usage of terms and nomenclature: one both the same in usage and meaning; the other both different; another different usage but the same meaning Normally terms that students used are various from nomenclature in the aspects of usage and meaning only a few would match and even rare for "Synonyms" to occur 4 Alternative options for students' scientific terms are maintenance adaptation or co-existence with formal scientific terms The most common way of selecting usage of terms is to maintain Sometimes students would adapt themselves once learn of scientist's term However some believe that very odd chances for both could exist at the same time
这样的疑问深深引起研究者的好奇,著手探索学生科学概念所使用的语言。本研究透过观察、访谈、学习单施测等方法来进行,目的在探讨学童在科学概念上所使用之学生惯用语、学生惯用语来源、学生惯用语与科学家用语之关联性、学生惯用语选择。研究结果如下:一、学童在科学概念上所使用之学生惯用语的命名原则有五种:外型、习性、功能、藉代称呼及声音,其中外型原则有颜色、体型及部份构造三类目,习性原则有习惯及能力两类目,藉代称呼原则有实体及虚拟两类目。二、学童在科学概念上所使用之学生惯用语有两种来源,分别为自己称取和听来。学生惯用语来源较多为自己称取,透过其他方式听来少一点,但两种来源的比率差距甚小。三、学童在科学概念上所使用之学生惯用语和科学家用语的关系有三种,分别为用语意涵均相同、用语不同意涵相同和用语意涵均不同。学生惯用语通常和科学家的用语是不同的,且其意涵也不同,只有部份学生惯用语和科学家用语意涵均相同,至於学生惯用语和科学家用语不同但意涵相同的极少。四、学童的科学概念相关学生惯用语选择有三种,分别为维持学生惯用语、改变成科学家用语和科学家与学生惯用语皆可。学童的科学概念相关学生惯用语选择,以维持学生惯用语最多,而有些时候学生会在得知科学家的用语后改变成科学家用语,但认为科学家用语和自己使用的学生惯用语皆可的则很少。
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As a consequence of an important theorem of algebraic topology, the invariants constructed by those diversity ways can be considered as identified via their unique isomorphisms. This concludes that the procedure of invariant construction gains a virtue of the model presented in this paper as being unrelated to whether there exists a symbolic represantation of images.
根据代数拓扑的重要定理,这些不同的构造方法所得的不变量在同构意义下是等价的,因此我们推论这种不变量的构造过程与图象是否有符号表示无关。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。