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孔径     
相关语句
  aperture
    Application of Images Aquired by Airborne Synthetic Aperture Side-Looking Radar in Feasibility Studies For Forest Resources Inventory
    机载合成孔径侧视雷达图像应用于森林资源调查可行性研究
短句来源
    ROTATING APERTURE METHOD IN DEFOCUSED WHITE LIGHT SPECKLE PHOTOGRAPHY
    旋转孔径离焦白光散斑照相法
短句来源
    Wavelet and Line Moment Based Algorithm for Matching Real Aperture Radar Image with TM Image
    基于小波和线矩的实孔径雷达图像与TM图像的匹配
短句来源
    A real-time autofocusing system used in space camera with long focus length and large aperture
    一种用于长焦距、大孔径空间相机的实时检焦系统
短句来源
    The Study of Synthetic Aperture Sonar (SAS) Technique (Review)
    合成孔径声呐技术研究(综述)
短句来源
更多       
  pore size
    TiO2 nanofiber morphology can be varied by controlling the pore size of the mesoporous silica film.
    纳米TiO2纤维的形貌可通过调节介孔氧化硅薄膜的孔径大小来控制。
    Studies on Bubble Pore Size and Diameter Distribution of Rigid Porous Filter Media(PartⅡ)
    硬质多孔过滤介质鼓泡孔径孔径分布的测定研究(Ⅱ)
短句来源
    Effect of pore size distribution on mass transfer in direct contact membrane distillation
    膜孔径分布对直接接触式膜蒸馏传质速率的影响
短句来源
    Effect of support pore size on integrity of Al_2O_3 micro-filtration membranes
    支撑体孔径大小对Al_2O_3微滤膜完整性的影响
短句来源
    Control of pore size in tubular pyrolysis Silicon based membrane
    管式硅基裂解膜孔径大小的控制
短句来源
更多       
  pore
    The porous aluminum specimens with high hardness,homogeneous pore distribution and pore diameter,and high porosity can be prepared under the pressure 20kN,with 10% addition of ZnCl2 and sintering at 650℃.
    压制压力20kN、添加剂ZnCl2的含量10%和烧结温度650℃的条件下,可制得硬度较高、孔隙率较高、孔径与孔隙孔径分布均匀的多孔铝。
短句来源
    The mean pore sizes of the support,medium membrane and top layer membrane in the asymmetry membrane are 6.6 μm,0.6 μm and 0.1 μm,respectively.
    非对称膜中支撑体、中间层膜和顶层膜的平均孔径分别为6.6μm、0.6μm和0.1μm。
短句来源
    The most probable pore diameter of an unsupported composite membranes was less than 3 nm,its specific surface area was 294.85 m2/g and the total pore volume was 0.28 mL/g.
    用等温氮气吸附实验测定了非担载膜的孔径大小和分布,其比表面积为294.85 m2/g,总孔容为0.28 mL/g,最可几孔径小于3 nm.
短句来源
    TiO2 nanofiber morphology can be varied by controlling the pore size of the mesoporous silica film.
    纳米TiO2纤维的形貌可通过调节介孔氧化硅薄膜的孔径大小来控制。
    Studies on Bubble Pore Size and Diameter Distribution of Rigid Porous Filter Media(PartⅡ)
    硬质多孔过滤介质鼓泡孔径孔径分布的测定研究(Ⅱ)
短句来源
更多       
  aperture size
    However, the millimeter wave radiometric images possess low spatial resolution and have near operating distance because of the confinement of the antenna aperture size.
    然而受天线孔径的限制,毫米波辐射探测器获得的图像空间分辨率太低,极大地限制了作用的距离。
短句来源
    According as the experiment results, both self-made alumina supports and self-made micro-filtration membrane have narrower aperture size distribution, bigger flux for water, higher strength.
    本实验所制备的多孔氧化铝支撑体及其微滤膜都具有孔径分布较窄、纯水通量大、抗弯强度较高等特点。
短句来源
    However,these were limited by its spatial resolution given by its physical antenna aperture size.
    传统的微波辐射计的空间分辨率受到天线孔径的限制 .
短句来源

 

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      aperture
    We consider Synthetic Aperture Radar (SAR) in which backscattered waves are
          
    The IBC on the surface of the medium and the boundary integral equation on the aperture of the cavity are transformed into the third boundary condition, and then the functional of the boundary value problem is obtained.
          
    We also assume that the phase error on the aperture led by the random surface error obeys a Gaussian distribution with zero mean, under which the expression of the average power pattern is deduced.
          
    Large aperture static interferential multispectral image compression with motion compensation and region of interest coding
          
    A novel autofocus algorithm for synthetic aperture radar (SAR) based on total variation is presented in this paper.
          
    更多          
      pore size
    Catalyst with appropriate specific surface area and narrow pore size distribution was obtained.
          
    Compared with the MgO sample prepared by the precipitation method, MgO prepared by solid-state chemical reaction has uniform pore size distribution, surface area, and crystal size.
          
    Results show that the title compound exhibits a typical mesoporous structure with the average pore size from 5 to 8 nm.
          
    The soil structure was expressed with fractal dimensions of particle size distribution (PSD), aggregate size distribution (ASD), and soil pore size distribution (SPD).
          
    Results showed that the fractal dimension of particle size distribution (PSD), the micro-aggregate size distribution (ASD) and the soil pore size distribution (SPD) can be used as the indices to evaluate the soil structure.
          
    更多          
      pore
    Catalyst with appropriate specific surface area and narrow pore size distribution was obtained.
          
    A new route to porous polyimide (PI) films with pore sizes in the nanometer regime was developed.
          
    Compared with the MgO sample prepared by the precipitation method, MgO prepared by solid-state chemical reaction has uniform pore size distribution, surface area, and crystal size.
          
    Results show that the title compound exhibits a typical mesoporous structure with the average pore size from 5 to 8 nm.
          
    The effect of vesicant and chitosan to the pore morphology, water absorption ratio, water absorption rate, expansion time and mechanical properties were studied.
          
    更多          
      diameter of aperture
    Symptoms are those of recurrent non-bilious vomiting and vary according to the diameter of aperture of the membrane.
          
      其他


    This artiele presents the preParation of porous polysulfone menbrane from polysulfone,dimethylformamide and ethylene glyeol monomethyl ether with pore size of 200一300A.The main Parameters,sueh as eomposi- t ionof easting solution and eoagulation bath mixture,temperature of卜eoagulationbath,ambient humidity and state of easting solution,whieh affeet the membrane perfarmanee,are diseussed.Based on seanning electren m ierograph observation of the membrane strueture,reeommendation 15 made of the optimum presription...

    This artiele presents the preParation of porous polysulfone menbrane from polysulfone,dimethylformamide and ethylene glyeol monomethyl ether with pore size of 200一300A.The main Parameters,sueh as eomposi- t ionof easting solution and eoagulation bath mixture,temperature of卜eoagulationbath,ambient humidity and state of easting solution,whieh affeet the membrane perfarmanee,are diseussed.Based on seanning electren m ierograph observation of the membrane strueture,reeommendation 15 made of the optimum presription and easting eonditions.

    本文介绍了以:聚砜、二甲基甲酰胺、乙二醇甲醚铸膜液制备出孔径为200—300A°的聚砜多孔膜。讨论了成膜工艺中主要参数,即铸膜液组成、冷浸浴的组成,冷浸浴温度,环境湿度以及铸膜液的溶解状态等对膜性能的影响,并对膜的形态结构进行了扫描电镜观察,选择了较好的配方和成膜条件。

    This paper is to discuss the rules by which the helium pressure varies with time when the helium is leaking out into the atmospher from nuclear fuel elements through the different holes equivalent to rated leak rate. The equations that will calculate the rules for the helium pressure variation are derived mathematically when the flow form of the helium leakage is divided in the molecular and viscous flow as well as diffusion state. And the formulae calculating the diameters of the various holes equivalent to...

    This paper is to discuss the rules by which the helium pressure varies with time when the helium is leaking out into the atmospher from nuclear fuel elements through the different holes equivalent to rated leak rate. The equations that will calculate the rules for the helium pressure variation are derived mathematically when the flow form of the helium leakage is divided in the molecular and viscous flow as well as diffusion state. And the formulae calculating the diameters of the various holes equivalent to the definitely rated leak rate are also given.

    本文讨论了核燃料元件中,氦气通过不同标称泄漏率所等效的不同直径的漏孔向大气进行自然泄漏时,其氦气压强随时间变化的规律。通过数学推导,分别得出了氦气通过漏孔时的流动状态为分子流、粘滞流及扩散状态时的计算方程。并给出了元件中氦气通过不同标称泄漏率所等效的不同孔径的漏孔直径的计算公式。

    This system consists of five parts: a 10T superconducting magnet, a 150 A power supply, a metallic inner dewar, a 80 1 liquid helium outer dewar and some other auxiliaries including the thermal shield, the magnet support, current leads, etc. The inner dewar which is placed in the bore-hole of the magnet provides a φ = 30 mm variable-temperature space from 4.2 K to 400 K and the superconducting magnetic field can be adjusted from 0 to 10 T. The samples can be changed at any time when the magnet is in operating...

    This system consists of five parts: a 10T superconducting magnet, a 150 A power supply, a metallic inner dewar, a 80 1 liquid helium outer dewar and some other auxiliaries including the thermal shield, the magnet support, current leads, etc. The inner dewar which is placed in the bore-hole of the magnet provides a φ = 30 mm variable-temperature space from 4.2 K to 400 K and the superconducting magnetic field can be adjusted from 0 to 10 T. The samples can be changed at any time when the magnet is in operating state. The construction of the outer dewar is a gas-cooling multi-shield insulation without liquid nitrogen protection. The loss rate of the liquid helium is 0.21 liter per hour. At 10T field strengh, when the temperature in the inner dewar is at 70 K, the loss rate is in the range of 1.3-1.6 liters per hour.

    该装置由11T超导强磁体;ф_内=30mm室温孔径的金属内杜瓦瓶;80升液氦金属外杜瓦瓶;JWL-150A超导磁体电源以及防辐射屏、吊杆、引线等五部分构成。金属内杜瓦瓶直接插在磁体内径中,其实验空间与外界相通,它可在4.2—400K之间变温,在0—10T之间改变磁场强度,也可随时更换测试样品。金属外杜瓦瓶采用气冷多屏绝热的结构。它自身的蒸发率为0.21升/小时。在内杜瓦瓶温度~70K、场强为10T时,液氦蒸发率为1.3—1.6升/小时之间。

     
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