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面结构     
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  surface structure
     · METHODS: Soaked in the multifunctional maintenance medium for 1wk, the interior and exterior surface structure of contact lenses were observed by the scanning electron microscope (SEM).
     方法:将隐形眼镜镜片浸泡于多功能保养液内1wk,扫描电镜(SEM)观察隐形眼镜镜片内外两面结构变化;
短句来源
     In this paper,a novel improved High-impedance Surface structure is introduced. U sing the improved structure,the gain of microstrip patch antenna is increased by about 0.9dB,and the back radiation is decreased by about 15dB.The performance i s improved much more than the antenna using normal High-impedance Surface struc ture.
     本文提出了一种改进型的高阻表面结构 ,将其应用于微带天线 ,可使天线增益提高 0 .9dB左右 ,背瓣降低 15dB左右 ,天线性能的提高明显优于应用普通高阻表面结构的天线 .
短句来源
     The Rectangular Waveguide Board Wall Slot Array Antenna with EBG High-impedance Surface Structure
     EBG高阻表面结构的矩形波导宽边缝隙天线
短句来源
     A "Two Zone" steady combustion model of AP/nitramine composite propellant was developed, considering the effect of the contents and particle sizes of the two oxidizers on the surface structure and burning rate of the propellants.
     考虑了AP/RDX/HTPB推进剂中两种氧化剂的含量、配比和粒度对推进剂燃面结构及燃速的影响,建立了一个高氯酸铵/硝胺复合推进剂的“双区”稳态燃烧模型。
短句来源
     The failure of the angle welding on the front partition wall economizer's inlet header of 125 MW unit is analyzed in the aspects of actual operation parameters and heating surface structure of the boiler. The causes of the problem are found out, and countermeasures are put forward.
     从锅炉的实际运行参数、受热面结构等方面对125 MW机组前隔墙省煤器进口联箱角焊缝区域失效问题进行了分析,指出了造成问题的内在原因,并提出了相应的对策。
短句来源
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  face structure
     The results of TG and DSC show that addition of SiC can not obviously improve the pyro-oxidation resistance of the coatings, but the thermo-stability of the crystal face structure of the composite coatings can be improved and the inversion temperature from crystal face(111) to (200) can be raised from 325 °C to 365 °C , when 15 g/L of nano SiC is added.
     热重和差示扫描量热试验表明 ,添加纳米SiC并不能明显改善镀层的耐高温氧化性能 ,但添加 15g L的纳米SiC可以提高复合镀层晶面结构的热稳定性 ,将(111)晶面向 (2 0 0 )晶面转化的温度由原来的 32 5°C提高到 36 5°C。
短句来源
     If pyro-oxidized at 400 °C , the crystal face structure of the coatings will be transformed to main(200) with auxiliary (111), and oxides like NiO and Fe 3O 4 will appear after oxidation at 800 °C .
     经 4 0 0°C高温氧化处理后镀层的晶面结构以 (2 0 0 )为主 ,(111)为辅 ; 经 80 0°C高温氧化出现氧化产物NiO和Fe3O4 。
短句来源
     The Crystalline Element for the Nucleation nad Growth of Dimond—Formation Process of“Two Layer Dendritic Face Structure
     金刚石成核及生长的结晶基元——“双层网面结构”的形成过程
短句来源
  facial structure
     Facial Structure in JB Algebra
     JB代数中的面结构
短句来源
  surf ace structure
     · METHODS: Soaked in the multifunctional maintenance medium for 1wk, the interior and exterior surface structure of contact lenses were observed by the scanning electron microscope (SEM).
     方法:将隐形眼镜镜片浸泡于多功能保养液内1wk,扫描电镜(SEM)观察隐形眼镜镜片内外两面结构变化;
短句来源
     In this paper,a novel improved High-impedance Surface structure is introduced. U sing the improved structure,the gain of microstrip patch antenna is increased by about 0.9dB,and the back radiation is decreased by about 15dB.The performance i s improved much more than the antenna using normal High-impedance Surface struc ture.
     本文提出了一种改进型的高阻表面结构 ,将其应用于微带天线 ,可使天线增益提高 0 .9dB左右 ,背瓣降低 15dB左右 ,天线性能的提高明显优于应用普通高阻表面结构的天线 .
短句来源
     The Rectangular Waveguide Board Wall Slot Array Antenna with EBG High-impedance Surface Structure
     EBG高阻表面结构的矩形波导宽边缝隙天线
短句来源
     A "Two Zone" steady combustion model of AP/nitramine composite propellant was developed, considering the effect of the contents and particle sizes of the two oxidizers on the surface structure and burning rate of the propellants.
     考虑了AP/RDX/HTPB推进剂中两种氧化剂的含量、配比和粒度对推进剂燃面结构及燃速的影响,建立了一个高氯酸铵/硝胺复合推进剂的“双区”稳态燃烧模型。
短句来源
     The failure of the angle welding on the front partition wall economizer's inlet header of 125 MW unit is analyzed in the aspects of actual operation parameters and heating surface structure of the boiler. The causes of the problem are found out, and countermeasures are put forward.
     从锅炉的实际运行参数、受热面结构等方面对125 MW机组前隔墙省煤器进口联箱角焊缝区域失效问题进行了分析,指出了造成问题的内在原因,并提出了相应的对策。
短句来源
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      surface structure
    Effect of the Surface Structure of Poly(styrene-co-acrolein) Microspheres and Its Modification by Protein on Electrosurface Prop
          
    The influence of pore width, temperature, pressure, and surface structure on the disjoining pressure was considered.
          
    Fine Surface Structure of Large-Scale Tetraphenylporphine Aggregates
          
    The effect of physicochemical transformations of finely dispersed carbonates on the surface structure of a dispersed phase in suspensions of clay and iron oxide particles is considered.
          
    The effect of physicochemical transformations of finely dispersed carbonates on the surface structure of a dispersed phase in suspensions of clay and iron oxide particles is considered.
          
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      face structure
    Peculiarities of the Ge(111)-(2×8) crystal face structure studied by electron energy loss spectroscopy
          
    It is shown that the theory of positive linear independence and the properties of Jordan-equivalent matrices can be utilized effectively in order to obtain an algebraic characterization of a face structure of convex polyhedral cones.
          
    One of these concerns the face structure and normal manifold of the critical cone of a polyhedral convex set associated with a point in ?n.
          
    Another concerns how perturbation of the right hand side of the linear constraints defining such a set affects the normal fan and the face structure.
          
    The system has been successfully demonstrated to extract 3D face structure of humans as well as other objects, starting from their image sequences.
          
    更多          
      facial structure
    Facial structure of the sum of two compact convex sets
          
    On the facial structure of the unit ball of aGM-Space
          
    On the facial structure of the unit ball of aGM-space
          
    We study the facial structure of two important permutation polytopes in
          
    On the facial structure of the set covering polytope
          
    更多          
      其他


    This artiele is the summary of the methods of the magnetic field design of the CT-8 Takamak. We analized the influence of all kinds of stray field on the equilibrium of the plasma tour, and discussed the requirement which should be satisfied by the magnetic field (especially, stray field) and developed a optimization method. We also analized the possibility to maintain the equilibrium in the process of temperature raising.

    本文是8装置(我国大型环电流器)磁场设计方法的一个总结。我们首先分析了各类磁场作用下等离子体环的平衡性质,提出了设计磁场所需满足的各种要求,其中包括对磁场精度——杂散场的要求。由于除了磁场形态外,还需满足诸如尽量大的伏秒数、结构安排的各种限制等要求,本文发展了一种优化方法,能灵活地结合各种要求进行计算。我们还分析了温度升高过程中维持较好平衡(保持磁面结构基本不变)的可能性。

    In the first part of this paper,the elementary concepts of geometrical structure for woven fabrics,such as the height of crimp,the sets and thickness of cloth,and the phases of structure,are briefly reviewed.Examples of their applications are then cal-culated in the second part. The author introduces the idea of using the variability of parameters to access the quality of fabrics and their technological performance in processing.

    本文第一部分简要地介绍了织物几何结构中关于经、纬屈曲波高、结构相、紧度等三个概念,并在此基础上建立了紧密等支持面结构织物的经、纬向紧度ε_i',ε_w'的概念,第二部分包括两方面的内容:1.用以上概念作为织物设计时选择纱号、概算织物密度的依据;2.揭示几何结构参数诸如纱线直径、屈曲波高等不匀率大小的工艺意义.

    In this paper an interior penalty function method is applied to minimize the weight of a wing structure under the constraints of flutter, strength and minimum gage. Three unconstrained optimization methods'steepest descent method, DFP variable metric algorithm and BFGS variable metric algorithm, are compared with each other. The quadratic interpolation method with the constraints approximated by quadratic polynomials is used in the one-dimensional search. Respective convergent criterions used in the interior...

    In this paper an interior penalty function method is applied to minimize the weight of a wing structure under the constraints of flutter, strength and minimum gage. Three unconstrained optimization methods'steepest descent method, DFP variable metric algorithm and BFGS variable metric algorithm, are compared with each other. The quadratic interpolation method with the constraints approximated by quadratic polynomials is used in the one-dimensional search. Respective convergent criterions used in the interior penalty function are presented. Several ways to reduce computer time are pointed out and discussed here.

    本文运用内罚函数法,使一个在颤振、强度和最小尺度等约束条件下的翼面结构重量取极小值。文中比较了最速下降法、DFP变尺度法和BFGS变尺度法这三种无约束最优化算法;采用了以二次多项式逼近约束函数的二次插值法来进行一维搜索;给出了内罚函数法中所用到的各个收敛准则;指出并讨论了减少计算机运算时间的一些途径。 计算结果表明,对于带有气动弹性约束的较复杂的结构优化设计,罚函数法是一个有效的方法。

     
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