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靶面     
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  target surface
     Determination of Angular Distributions of Excimer Laser Induced Plasma Near YBa_2Cu_3O_(7-x)Target Surface ̄+
     准分子激光在YBa_2Cu_3O_(7-x)靶面激励等离子体的角分布研究
短句来源
     for the target thickness h =1.00mm irradiated by laser beams,and the laser intensity I =640~980W/cm 2,the laser thermal stress increases with the increase of laser intensity irradiated on the target surface.
     当激光辐照靶材厚度h=1.00mm、激光强度I=640~980W/cm2时,激光热应力随辐照靶面激光强度的增加而增大。
短句来源
     When the laser intensity irradiated on the target surface is about 1000W/cm 2 ,the laser thermal stress descends rapidly with the increase of target thickness;
     当照射靶面激光强度约1000W/cm2时,激光热应力随靶厚的增加而快速减小。
短句来源
     The dimension of the strongest intensity region is given to be about 72μm×31μm. Also, the divergences of the laser beam are gained. The divergence in the direction perpendicular to the target surface is about 4mrad and in the parallel direction about 9mrad.
     由实验得到了类Ne钛X射线激光束近场与距靶端32mm处(准远场)强度的空间分布,给出了该激光束在近场强度最大区域的空间尺度(FWHM)约为72μm×31μm,以及在垂直靶面与平行靶面方向的束发散角分别约为4mrad与9mrad。
短句来源
     Laser irradiance on target surface is ranging from 2×1012 to 1014 W·cm-2. Experimental scaling laaw is compared with theory.
     靶面激光辐照强度为2×10~(12)W·cm~(-2)~1×10~(14)W·cm~(-2)。 比较了实验和理论给出的定标规律。
短句来源
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  target plane
     Analysis on Performances of Random Phase Plate inRealization of Uniform Irradiation on Target Plane
     无规位相板在实现靶面均匀辐照方面的性能分析
短句来源
     With adaptive optics correction, the peak intensity at target plane is about 3.5 times of that without correction.
     校正后的靶面峰值能量大约是校正前的3.5倍。
短句来源
     COMPUTER SIMULATION FOR RESOLUTION IN THE CCD INTERSECTING TARGET PLANE
     CCD交汇系统靶面分辨力的计算机仿真研究
短句来源
     It has an important meaning for precision measurement of the small target object with high speed in the large target plane.
     对大靶面、高速小目标物体的精密测量具有重要意义
短句来源
     It has an important meaning for precision measurement of the small target object with high speed in the big target plane.
     对大靶面、高速小目标物体运动轨迹的精密测量具有重要意义。
短句来源
更多       
  target wall
     High velocity flows not only exist on the target wall but also on the side and top walls of the passage.
     通道的高速区不仅仅是射流直接冲击的目标靶面,同时在通道两侧和顶部都存在着高速区。
短句来源
     Important aspects of the study include:the cross-flow in the channel pushes the jets and prevents them reaching target wall.
     结果表明:通道内的横流把射流推向下游并阻止其冲击到靶面,横流作用对通道下游流场有很大影响;
短句来源
  “靶面”译为未确定词的双语例句
     when laser intensity I ranges from about 0.60kW/cm ̄2 to 1.13kW/cm ̄2 and plate’s melt occurs,α_(eff) is between 0.16 and 0.18 and α_a≈0.20~0.25(as-received );
     当照射靶面激光强度I≈(0.60~1.13)kW/cm ̄2和发生熔融时,α_(eff)≈0.16~0.18和α_a≈0.20~0.25(工业商品铝表面);
短句来源
     Gaussian (0.3 to 2.2ns) 1.06μm laser pulse with energy from 2 to 50J at average laser intensity of 1.8×1013 to 1.1 × 1015W/cm2, were used to irradiate thick, Au, Ag, Ti, Al, and C8H8 targets.
     实验利用高斯型1.06μm激光脉冲,其能量为2~50J,脉冲宽度为0.3~2.2ns,靶面平均辐照强度为1.8×1013~1.1x10~(15)W/cm~2,光束以25°角入射。 实验采用了Au、Ag、Ti、Al和C_8H_8等厚靶。
短句来源
     When target thickness h ≤2.50mm and laser intensity I ≥800W/cm 2 ,the laser thermal stress strength is greater than the material fracture strength in the laser irradiation zone,holes and fracture strips occur and materials damage.
     当靶厚h≤2.50mm,辐照靶面激光强度I≥800W/cm2时,激光热应力强度超过激光辐照区材料断裂强度,萌生许多孔洞裂纹,引起材料断裂破坏。
短句来源
     Using an Optical Spectrescopic Analyzer (OSA, WP-4), the axial and radial distributions of emission spectra intensities of Xecl excimer laser induced plasma near YBa2Cu3O7-xtarget were determined.
     本文用光学光谱分析仪(OSA,WP-4)首次测量了XeCl准分子激光在YBa2Cu3O7-x超导靶面激励等离子体发射谱的轴向、径向分布。
短句来源
     The corresponding gain coefficients deduced from the growth curve of on-axis intensity with the length of the line-focused laser plasma are 1.5cm-1 and 1.4cm-1, respectively.
     用轴向强度随线聚焦激光等离子体长度的变化得到离靶面300μm处的增益系数分别为1.5和1.4cm~(-1)。
短句来源
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  target surface
A Laser-Plasma Ion Source with Normal Light Incidence on the Target Surface
      
A laser ion source with the beam focused along the normal to the target surface was designed and produced.
      
The flux density of laser radiation on the target surface varied between 1013 and 1014 W/cm2.
      
Two-dimensional calculations have allowed us to interpret this effect in terms of local "piercing" of the target at spots on the target surface where the radiation intensity has its peaks.
      
It is shown experimentally that an ion beam is directed perpendicular to the target surface.
      
更多          
  target plane
The calculated results for the impact of a porous SiO2 dust particle on a silver target are discussed for the case in which the particle moves at a velocity of 80 km/s normal to the target plane.
      
It was shown that a desired structure can be provided by controlling charged particle fluxes with the substrate remaining parallel to the target plane.
      
A relationship between the anisotropy parameters of bremsstrahlung behind the target, angular characteristics of electrons, and geometrical parameters of the electron beam in the target plane is established.
      
Radiative images were calculated and images obtained can not only present the energy distribution on the charge-coupled device (CCD) camera target plane but also reflect the energy distribution condition in the simulation furnace.
      
In the traditional geometry the growth rate is almost constant at around 0.0035 and 0.023?nm/pulse for 1 and 5?J?cm-2, respectively, while in the target plane it increases proportionally to the logarithm of the nitrogen pressure for both fluences.
      
更多          
  target faces
Previously, priming had been reported when the prime and target faces were closely associated, e.g., Prince Charles and Princess Diana (Bruce >amp;amp; Valentine, 1986).
      
Multi-sweepable volumes contain both multiple source and multiple target faces.
      
CCSweep decomposes multi-sweep volumes into many-to-one sweepable sub-volumes by projecting the target faces through the volume onto corresponding source faces.
      
The new volumes have only single target faces and are represented in the meshing system as real, solid geometry, enabling them to be automatically meshed using existing many-to-one hexahedral sweeping approaches.
      
Changes in pose plus expression and context significantly reduced recognition accuracy for the target faces.
      
更多          
  target wall
The paper presents results of a finite element analysis of both elastic and elastoplastic oblique impacts of a sphere with a target wall using the DYNA3D code.
      
Effect of surface aluminizing on hydrogen penetration through the target wall at high temperatures and pressures
      
The tritium content is determined by measuring the flux ofβ particles (from the decay of tritium) which emerge from the target wall.
      
By changing such parameter as thickness of the target wall, comparison of the simulation results was performed.
      
By changing such parameter as thickness of the target wall, comparisons of the simulation results were performed.
      
更多          


This paper describes a method of "optical tracing" used to measure the energy distribution on focal plane of an imperfect processed optical system. It is similar to Hartmann method. High brightness He-Ne laser with TEM00 mode output is used as a probing beam. A parallel beam passes through a movable aperture and is focused by a local part of optical system to be measured. Then we determine the position of central point of Airy spot on the focal plane. The spatial coordinate of the point is magnified to 40 X...

This paper describes a method of "optical tracing" used to measure the energy distribution on focal plane of an imperfect processed optical system. It is similar to Hartmann method. High brightness He-Ne laser with TEM00 mode output is used as a probing beam. A parallel beam passes through a movable aperture and is focused by a local part of optical system to be measured. Then we determine the position of central point of Airy spot on the focal plane. The spatial coordinate of the point is magnified to 40 X by an objective and read out by microscope. Coordinate of each central point of Airy spot corresponding to each local part is obtained if the aperture can be moved in the whole optical system. In the case that the optical system is divided into m parts by the movable aperture, there will be m points on focal plane.

介绍了测量加工欠完善光学系统焦平面能量分布的“光线追迹”法。它类似于哈特曼方法,用该法测量了用于激光等离子体实验的非球面-球面透镜的焦斑大小及能量分布,为改进透镜加工及计算靶面上的能量密度提供了依据。

In this paper the self-sharpening effect of electron beam landing on the target in a vidicon and its influence on resolution of electron beam have been digitally analyzed with computer. The mathematical-physical models applied are as follows: The distribution of current density in electron beam is Gaussian; the energy distribution of electrons in beam is Maxwellian; and the signal-readout model is capacitor discharge model. When the model of cross section of beam is one-dimensional, the self-sharpening effect...

In this paper the self-sharpening effect of electron beam landing on the target in a vidicon and its influence on resolution of electron beam have been digitally analyzed with computer. The mathematical-physical models applied are as follows: The distribution of current density in electron beam is Gaussian; the energy distribution of electrons in beam is Maxwellian; and the signal-readout model is capacitor discharge model. When the model of cross section of beam is one-dimensional, the self-sharpening effect of beam in 1(1/4)" and 2/3" plumbicon, 1" Sb2S3 vidicon and 1" saticon are computed. Also their influences on AR (amplitude response) of electron beam have been computed. The influences of beam current, signal current, equivalent temperature of beam, target capacitor and velocity of scanning on the self-sharpening effect have been analyzed. When the model of cross section of beam is two-dimensional, the self-sharpening effect of beam in 1(1/4)" plumbicon, as an example, is given.

本文对Vidicon型摄象管中电子束着靶时的自变尖效应及其对电子束分辨能力的影响进行了计算机数值分析。所采用的数学物理模型为电子束中电流密度在横截面上的分布为Gauss分布;电子束中电子的能量分布为Maxwell分布;电子束读出靶面信息的模型为电容放电模型。在电子束截面为一维模型时,计算了1 1/4″、1″、2/3″PbO管(plumbicon)1″Sb_2S_3管和1″硒砷碲管(saticon)中电子束自变尖的情况及其对电子束幅度响应函数(AR)的影响。分析了束电流、信号电流、束等效温度、靶面电容、扫描速度等因素在自变尖效应中所起的作用。本文还以1 1/4″PbO靶管为例,给出了电子束截面为二维模型时,电子束有效着靶截面的自变尖情况。

In this paper, two kinds of structure of the cylindrical blackbodycavity are studied, the heat source of the cavity is arranged reasonably. In thecase of the large aperture, it is possible to keep the temperature of the cavitywalls and the target stirface uniformly by using a cavity behind the target. Preci-se control permits the maximum difference in temperature of the wall surfaces ofthese two blackbody furnaces to be kept within 2. 5℃ and 3℃ respectively. Twomethods for measuring the temperature of inner...

In this paper, two kinds of structure of the cylindrical blackbodycavity are studied, the heat source of the cavity is arranged reasonably. In thecase of the large aperture, it is possible to keep the temperature of the cavitywalls and the target stirface uniformly by using a cavity behind the target. Preci-se control permits the maximum difference in temperature of the wall surfaces ofthese two blackbody furnaces to be kept within 2. 5℃ and 3℃ respectively. Twomethods for measuring the temperature of inner wall surfaces in the blackbody ca-vity are examined. Thus gives the relationship between the temperature measuredand the cavity temperature distribution. The effective emissivity distribution of thetarget surface and the cavity walls, and the integrated emissivity ε~c were studiedand calculated for several different cases of temperature distribution.

本文研究了两种园筒形黑体空腔的结构,合理布置空腔的热源。在大开孔的情况下也能使靶面温度与腔壁温度保持均匀。精确控制可使这两个黑体炉内壁的最大温差分别保持在2.5℃和3℃以内。实验考察黑体空腔内的两种壁面温度的测量方法,指出两种方法所测温度指示值与腔体温度分布的关系。文中研究并计算几种温度分布情况下靶面和腔壁的有效发射率分布和积分发射率ε~C。

 
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