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  ball
     Application Study about Crushing Statistic Mechanics Principle and Transition Probability on Load-abbition Ball System
     破碎统计力学原理及转移概率在装补制度中的应用研究
短句来源
     A Study on Hydrogen Storage Properties of La_2Mg_(16)Ni Modified by Ball Milling and Dynamic Process of Benzene Hydrogenation Reaction in Liquid Phase Catalyzed by La_2Mg_(16)Ni Hydride
     La_2Mg_(16)Ni储氢合金的磨改性及其氢化物催化液相苯加氢反应动力学过程研究
短句来源
     Vector-Valued Dirichlet Type Function Spaces on the Unit Ball of C~n
     C~n单位上的向量值Dirichlet型函数空间
短句来源
     Study on the Synthesis of Ceramics with Boron, Carbon, or Nitrogen by High Energy Ball Milling
     高能磨法制备含硼、碳、氮陶瓷的研究
短句来源
     Analysis of Movement of Ball Rotor
     转子分析
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  spherical
     NORTHERN HEMISPHERE OROGRAPHY EXPRESSED BY SPHERICAL FUNCTIONS
     用函数展开北半地形的计算
短句来源
     The approximate sohltion of the symmetric vibration problems in spherical shells
     壳振动问题的近似解
短句来源
     THE APPLICATION OF A LASER SPHERICAL WAVE INTERFEROMETER IN ASTRONOMICAL OPTICS
     激光波面干涉仪在天文光学中的应用
短句来源
     On the Calculation of Shallow Spherical Shells
     扁壳的计算
短句来源
     BOUNDARY TYPE CUBATURE FORMULAS ON THE CIRCULAR RING AND SPHERICAL SHELL
     圆环域与双层壳上的边界型求积公式
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  sphere
     THE METHOD OF CONSTRUCTING CUBATURE FORMULAS FOR THE SPHERE
     域上求积公式的一种构造方法
短句来源
     STATIC SPHERICALLY SYMMETRIC SELF-DUAL SOLUTIONS OF THE YANG-MILLS FIELD EQUATION AND 'THOOFT-POLYAKOV MONOPOLES DISTRIBUTED CONTINUOUSLY ON A SPHERE
     同步对称静态Yang-Mills 自对偶解和连续面分布的’tHooft-Polyakov磁单极
短句来源
     THE APPLICATION OF THE PLATINUM SPHERE ELECTRODE WITH MERCURY FILM PLATED IN VACUUM TO THE ANODIC STRIPPING VOLTAMMETRY——Ⅰ——DETERMINATION OF COPPER AND LEAD IN WATER
     铂真空镀汞膜电极在阳极溶出伏安法中的应用(Ⅰ)——水中铜与铅的测定
短句来源
     Study of the localized Electronic Structure of Semiconductors with a X_α-overlapping Sphere Method Ⅰ.General Theory
     利用X_α-重叠方法研究半导体的局域电子结构——Ⅰ.基本理论
短句来源
     Srudy of the Localized Electron Structure of Semiconductors with a X_α-Overlapping Sphere MethodIl.Orbiral Levels of Perfect Diamond and Silicon
     利用X_α—重叠方法研究半导体的局域电子结构——Ⅱ.共价半导体金刚石和硅的轨道能级
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  ductile
     As a result ductile iron of high tenacity QT450-22 is obtained in casting condition, the mechanical property is as follows, σb452.3~467.9 MPa, δ22.2%~26.0%.
     铸态下获得高韧性铁QT450-22,σb452.3 ̄467.9MPa,δ22.2% ̄26.0%。
短句来源
     The results show that excellent impact toughness of ductile iron can obtain with 0.3wt% Ni addition and two-stage graphitization Impact toughness values α_(kv) of the specimens reaches 23.425 J/cm~2 at room temperature,23.738 J/cm~2 at-20 ℃,20.867 J/cm~2 at-40 ℃and 15.886 J/cm~2 at-60 ℃ respectively.
     试验结果表明,加入质量分数0.3%Ni的铁,经热处理后具有良好的冲击韧度。 在四种温度环境下,其冲击韧度αkv分别可达到23.425 J/cm2、23.738 J/cm2、20.867 J/cm2和15.886 J/cm2。
短句来源
     Ductile Iron Casting of YF32--630 Hydropress Slide
     YF32-630液压机滑块的铁铸造
短句来源
     As-cast ductile iron ( σb ≥590N/mm2,δ≥6%) woa produced by use of Benxi pig iron containing 0.6 0.7%Mn and by selecting the contents of Si,Mn,Cu.
     用含锰量为0.6~0.7%的本溪生铁通过调整Si、Mn、Cu的含量试制成铸态混合基体铁,性能达到ob560N/mm~2,56%.
短句来源
     Simulation on the temperature field of 4JB1 ductile iron crankshaft
     4JB1铁曲轴的铸造温度场模拟
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  ball
Higher-dimensional ball quotients and the invariant quintic
      
To prove this, we first state and prove a general result which gives a criterion for checking whether a variety of dimensionN≥3 is a (compactification of a) ball quotient.
      
The group of direct isometries of the hyperbolic space ${\Bbb H}^n \mbox{is} G=\mbox{SO}_0(n,1).$ This isometric action admits many differentiable compactifications into an action on the closed n-dimensional ball.
      
In particular, we are able to treat the Pinsky phenomenon for eigenfunction expansions of piecewise smooth functions with jump across the boundary of a ball on such manifolds, in dimension three.
      
Unifying representation of Bézier curve and generalized ball curves
      
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  spherical
We show that wonderful varieties are necessarily spherical (i.e., they are almost homogeneous under any Borel subgroup ofG).
      
Recently, there is a renewed interest in wonderful varieties of rank two since they were shown to hold a keystone position in the theory of spherical varieties, see [L], [BP], and [K].
      
In particular, we obtain a presentation of the Chow ring of any smooth, projective spherical variety.
      
We then give a combinatorial classification of reductive monoids by means of the theory of spherical varieties.
      
We prove that, for a real reductive algebraic group, they can be characterized as the spaces of real points of affine spherical homogeneous varieties of the complexified group.
      
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  sphere
Spherical harmonics arise on the sphere S2 in the same way that the (Fourier) exponential functions {eikθ}k∈? arise on the circle.
      
We apply our general results to special linear groups and low rank symmetric groups, and obtain new efficient algorithms for harmonic analysis on these classes of groups, as well as the two-sphere.
      
Approximation inL2 Sobolev spaces on the 2-sphere by quasi-interpolation
      
In this article we consider a simple method of radial quasi-interpolation by polynomials on the unit sphere in ?3, and present rates of covergence for this method in Sobolev spaces of square integrable functions.
      
To get this formula, we prepare a sampling formula for the sphere.
      
更多          
  ductile
Ultra-precision ductile grinding of BK7 using super abrasive diamond wheel
      
The ductile β phase with a volume fraction of about 30% possesses a developed dendritic morphology.
      
Because of the highly ductile behavior induced by the nanoparticles, the fracture energy achieved two-to three-fold increase, depending on the ligament lengths of the samples.
      
Theory of ductile-brittle transitions in steels and iron alloys: Substantiation of the ductile-brittle transition mechanism
      
Theory of ductile-brittle transitions in steels and iron alloys: Approximation of Wigner electronic structure "crystallization"
      
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