中心项 central item(2) 英 central term(0) 德 zentralglied(0)   central item      To sum it up,the theory has three main points:(1) Central item. There must be a leading discipline or doctrine in the interdisciplinary and multidisciplinary studies and the chief expert must be appointed accordingly.      它包括三个方面的内容:(1)中心项(Central Item),学科会聚与交叉必有一个主要的领域、学科或学说,这是确定首席专家的依据; 短句来源      (2) Context. It refers to the fields relevant to the Central Item,by which the structure of personnel and project proposals can be judged and evaluated.      (2)关联域(Context),即构成该学科会聚的以中心项为主的相关领域,这是确定准入人员、准入项目的依据; 短句来源   “中心项”译为未确定词的双语例句      The Virasoro algebra of Nambu-Goto string with Weyl ordering were derived by virtue of principal value sum where all central terms vanished.      利用主值求和方法给出Nambu-Goto弦在Weyl对应下的Virasoro代数没有中心项,并计算了弦的角动量算子及其对易关系. 短句来源      It is pointed out that the prequantization Hilbert space is the unitary representation of the conformal group where the centre term of Virasoro algebra does not exist but this representation is reducible.      本文指出,预量子化的Hilbert空间是共形变换群的么正表示,Virasoro代数没有中心项. 但这个表示是可约的. 短句来源      One is the holomorphic vector bundle, whose Ricci curvature is just the central terms of the Virasoro algebra and super-Virasoro algebra corresponding to the heterotic string. The other is the complex line bundle,which can be interpret- ed as the ghost vaccum for the. theory.      一类是全纯矢量丛,它的 Ricci 曲率正好是杂化弦的 Virasoro 代数和超 Vira-soro 代数的反常中心项,另一类是复线丛,它可以被解释为该理论的鬼真空,它的曲率与临界维数时全纯矢量丛的曲率正好相差一个负号. 短句来源      For a large class of vector fields, the central term of the reduced algebra near the horizon is proved to be zero by use of the null tetrad formalism.      对于一大类向量场,利用零标架方法证明在视界附近的约化代数的中心项为零。 短句来源   相似匹配句对      Where T(R) is the hypercenter of R; Z(R) is the center of R.      Z（R）是R的中心。 短句来源      Mincom Central      明科中心 短句来源      (E)(m times)a.      X(E)(m 项)a. 短句来源      Also, the authors put forward three suggestions to the construction of Shanghai's retail centers.      最后,就商业中心的建设提出3项建议。 短句来源      Reforms for the air conditioning system of Xiamen Broadcast and Television Centre      厦门广播电视中心空调工程的两项改造 短句来源 查询“中心项”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   central item Auslander-Reiten sequences are the central item of Auslander-Reiten theory, which is one of the most important techniques for the investigation of the structure of abelian categories. 例句来源       The central item is the so called concept, which is a pair of subsets: A subset of molecules and a subset of properties which correspond to each other. 例句来源       Because the purpose of sorting is to find the central item in a portion of the list, and this can be done by indexing. 例句来源       It's not only a question of successfully dealing with these things; this became a central item of interest in research from then until this very day. 例句来源       In the mid 1980's Jerry led the design and development for an enterprise wide ERP system, which included central item, contract and vendor files. 例句来源       更多                    In the paper we give a new transformation in the reduced gravity,which is associatedwith the Virasoro algebra without the center term.To compare with the Geroch group it iseasy to establish the relationship between the Virasoro algebra and the Kac-Moody algebra inthe theory of the reduced gravity.Then we point out that the transformation can be adoptedto generated the new solutions of the Ernst equation from the old ones.             我们在引力场约化理论中找到了一种新的变换关系,并且发现这种交换所对应的代数结构是没有中心项的Virasoro代数.同Geroch群相比较,不难确定在引力场约化理论中Virasoro代数与Kac-Moody代数之间的关系.最后,我们指出了这种变换可用来产生Ernst场方程的新解. 文摘来源          We generalize the infinitesimal transformations obtained in the Ernst fields of vacuum previously to the case including electromagnetic fields to form a larger infinite symmetric group which is isomorphic to the Virasoro group without a central term. Wherein we find a subgroup, the enlarged Cosgrove group. It is pointed out that new solutions of the electronic fields can be genereated from old ones by means of our new transformations.             我们把以前在真空Ernst场中得到的无穷小对称变换推广到带电磁场的Ernst场中,得到了一个更大的无限维对称群,这个群与不带中心项的Virasoro群同构.我们从中找到一个子群,即扩大Cosgrove群.最后,我们指出用这个新发现的无穷小变换,可以从已知带电磁场的Ernst场方程解,获得一个新解. 文摘来源          This paper shows a new symmetric transformation-C transformation in super principal chiral model and discover an infinite dimensional Lie algebra related to the Virasoro algebra without central extension. By using the Riemann-Hilbert transformation. The physical origination of C transformation is discussed.             我们在超主手征场模型中找到了一种新的对称变换——C变换,发现在这种变换下体系具有一个与没有中心项的Virasoro代数相关的无穷维李代数.利用Riemann-Hilbert变换,我们探讨了C变换的物理根源. 文摘来源   << 更多相关文摘         相关查询: 潜在的中心项 —中心 项 中心 施主中心 创新中心 声中心 投影中心 推广中心 外贸中心 从中心 系统中心  对查询结果不满意

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