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体积形式
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  volume form
     The Volume Form of a Finsler Manifold
     Finsler流形上的体积形式
短句来源
     By discussing the volume form of a Finsler manifold,this paper gives the lower boundary of the volume growth provided that the mean covariance vanishes.
     讨论了Finsler流形的体积形式 ,讨论了当平均协变为 0时 ,Finsler流形的球体体积增长的下界 ;
短句来源
  volume forms
     A Formula for the Canonical Volume Forms
     关于典范体积形式的一个公式
短句来源
     On the Volume Forms and Submanifolds in Finsler Geometry
     Finsler几何中体积形式与子流形
短句来源
  “体积形式”译为未确定词的双语例句
     An optimization approach, based on computational fluid dynamics methodology, is investigated for the performance prediction and optimization of liquid rocket engine nozzle. The CFD codes employ implicit finite-volume Lower-Upper decomposition (LU) scheme for solving the two-dimensional and axisymmetric Navier-Stockes equations and species transport equations in an efficient manner.
     在火箭发动机喷管的型面优化及性能预估中,采用了一种基于计算流体力学(CFD)的优化方法,其中的CFD计算软件采用了有限体积形式的隐式LU分解方法对二维和轴对称N-S方程组及组分输运方程组进行了求解。
  相似匹配句对
     The Volume Form of a Finsler Manifold
     Finsler流形上的体积形式
短句来源
     A Formula for the Canonical Volume Forms
     关于典范体积形式的一个公式
短句来源
     From the "Methodology" to the "Form"
     从“方法”到“形式
短句来源
     On form
     “形式”论
短句来源
     OMNIPOTENT VOLUME FORMULA
     万能体积公式
短句来源
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  volume form
Once this is done, powers of the canonical 3-form are different from zero up to the volume form.
      
It is found that the magnetic lines of force of the working volume form a series of regions, each with its own properties, and do not penetrate from one region to another.
      
The discharge exists in the diffuse (volume) form with a relatively low current density (~0.2 A/cm2) and a high (above one kilovolt) voltage drop across the air gap (~1 cm) between the water electrodes.
      
More generally, if it admits an r-parameter volume-preserving commutable symmetry, then the reduced flow preserves the corresponding (n - r)-dimensional volume form.
      
It is found that for nuclei in different mass regions the volume form of the coupling interaction is more adequate than the surface form to account for the available experimental data.
      
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  volume forms
Moduli spaces of compact stablen-pointed curves carry a hierarchy of cohomology classes of top dimension which generalize the Weil-Petersson volume forms and constitute a version of Mumford classes.
      
Thomas is reformulated in terms of the bundle of contravariant volume forms on the manifold.
      
Thomas is examined both in terms of the Cartan connection on the projective bundle over the manifold and the structure of the bundle of volume forms.
      
There is an SO(3, 3)-invariant integral transform mapping volume forms on ?P3 into two-forms on the conformal compactification of ?2.2.
      
We prove that the case of densities of weight 1/2 (half-densities) is distinguished by the existence of a unique odd Laplace operator depending only on a point of an 'orbit space' of volume forms.
      
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?In this paper we analyse the macroscopic volume style of materials from thediscussion about the small opening construction and view-density determination ofmaferials. Based on this, We put forward the concept of intermediate strata volume ofmaferial. Use of this one, We discussed the determining and calculating of stateparamefer of materials.

本文从对材料孔隙构造和视密度的实际测定方法的讨论出发,对材料在宏现状态下的体积形式进行了分析,提出了材料的中间层次体积这一概念。并利用实体积这一中间层次的体积,对测定和计算材料状态参数的问题作了讨论。

By discussing the volume form of a Finsler manifold,this paper gives the lower boundary of the volume growth provided that the mean covariance vanishes.If the mean distortion is equal to 1,then the Minkowskian space must be Euclidean.

讨论了Finsler流形的体积形式 ,讨论了当平均协变为 0时 ,Finsler流形的球体体积增长的下界 ;并同时证明了只有当平均扭曲为 1时 ,Minkowski空间是欧氏的 .

The vacuum flow-field of interceptor divert thruster is the important basis for designing.Its plume infrared is the important research object for defense.Discrete N-S equations based on finite volume LU format was used in this article.Time-marching method was adopted to calculate the whole flow-field inside interceptor divert thruster nozzle and its plume.In the mean while,the chemical reaction participate by some main components was considered.The inside and outside nozzle distributions of those parameters...

The vacuum flow-field of interceptor divert thruster is the important basis for designing.Its plume infrared is the important research object for defense.Discrete N-S equations based on finite volume LU format was used in this article.Time-marching method was adopted to calculate the whole flow-field inside interceptor divert thruster nozzle and its plume.In the mean while,the chemical reaction participate by some main components was considered.The inside and outside nozzle distributions of those parameters were obtained,such as velocity,temperature,density,components consistency etc.Research indicates that the method in this article can simulate the inside and outside flow field of nozzle in vacuum very well.The plume expand rapidly in vacuum.

拦截弹轨控发动机在真空中的流场可为其设计提供重要的理论依据,同时其喷焰红外辐射特性也是防御上的重要研究对象。采用基于有限体积形式的LU格式离散N-S方程,通过时间推进法求解拦截弹轨控发动机喷管以及外场喷流区域在内的气相统一流场,同时考虑了各主要组分参与的化学反应,得到了轨控发动机喷管内外速度、温度、密度、组分浓度等参数的分布情况。研究表明:使用本文中的方法可以很好地计算出轨控发动机在真空中的内外流场。真空羽流膨胀迅速。

 
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