Theoretical analysis proves that, when the pixel number, pixel size and reconstructed wavelength of the hologram are certain, computer simulated algorithms of Fresnel diffraction integral fall into convolution algorithm, angular spectrum algorithm and direct Fourier trans...
通过对相位函数局域空间频率的分析，给出了判定算法适用范围的特征再现距离，并分析得出，再现距离大于特征再现距离时，适合用卷积法；小于特征再现距离时，适合采用角谱法；等于特征再现距离时三种方法都适用。
After extrusion and equal channel angular pressing, the average grain size is 300400 nm, the yield strength and ultimate tensile strength of the alloy are 400 MPa and 450 MPa, respectively.
常规挤压后再经过等通道角挤压，晶粒尺寸被进一步细化到300~400 nm，屈服强度和抗拉强度进一步提高到400 MPa和450 MPa。
The SiC particles are angular, while the Al〓O〓 particles and the AlN particles are spherical The microyield and microcreep behaviors of the composites were investigated, and the effects of particle size, particle shape and particle volume fraction on the microyield and microcreep behaviors of the composites were studied.
研究了以上颗粒增强铝复合材料的微屈服与微蠕变行为，并探讨了颗粒尺寸、颗粒形状以及颗粒体积分数对复合材料微小塑性变形行为的影响。
The change trends of the angular size of the blur spot θ with the f-number and half-field angle uP were concluded.
弥散斑的角宽度θ随着半视场角uP的增大而增大，随着系统f数的增大而减小。
As a natural limit for angular resolution, one may take the angular size of the central diffraction disk.
我们可以取中心衍射环的角直径作为角分辨率的一种自然极限。
ABSTRACT Quartz angular rate sensor is a new kind of micromechincal gyroscope. It has many unique advantages such as low cost, small size, high reliability and long life, and it can survive in harsh environment, etc. So this type of gyroscope is especially noticeable in recent years, and is showing a tendency to replace other ones.
石英角速率传感器是一种新型的微机电陀螺，这种陀螺成本低、尺寸小、可靠性高、寿命长、又能在恶劣的环境下工作等许多独特的优点，因此，近年来格外引人注目，且有取代其他类似器件的趋势。
The combination of very large radio flux and exceedingly small angular size means that the sources have a fantastic surface brightness.
极大的射电流量同极小的角经集于一身，意味着这些发射源有难以置信的高表面亮度。
Besides water retention, it is traditionally believed the cause of a prominent jaw line is an oversized jaw bone. However, according to plastic surgeons, the facial bone structure would not affect the overall size of a face significantly. An angular jaw line is more often due to the thickness of inner chewing muscles, which results in the protrusion of facial cartilages that causes undesirable jaw lines. Basing on this concept, 2B For Face from 2B Alternative provides a total solution for you.
一支帮妳解决面部5大问题：解决阔面烦恼除水肿外，传统认知以为阔面是因为面骨过大引致，但根据整型医生表示，脸部骨骼不会造成面容上明显差异，阔面成因多是因为先天面内咀嚼肌过厚，导致面上软骨外突，形成不同的面型问题。2B For Face专业瘦面精华基於此原理，提供一站式解决方法。
Each cell corresponds to a region of space that is the size of a giant molecular cloud and moves with the same tangential velocity v. The angular velocity is given by, where r is the distance of the ring from the center of the galaxy.
每个细胞相当于一个区域的空间，这是一个巨大的规模和行动分子云与同切向速度诉角速度给出了，其中r是距离环的中心银河。
However, if comparing the average duration of all fixations, average size of all saccades, average horizontal/vertical angular resolution in the trial, there were no significant differences.
等等。但是，如果比较平均时间，所有的固定，平均粒径为所有扫视，平均水平/垂直角决议的审判，有没有显着差别。
The numerical simulation results also indicate that the angular anisoplanatic error varies proportionally to the square of the anisoplanatic angle, and the focus anisoplanatic error is in inverse proportion to the 1.71 th power of the beacon height, if the caliber size is invariable.
对非等晕效应的数值模拟结果表明：在热畸变参数较小，且给定口径尺寸的情况下，热晕角度非等晕校正残差与非等晕角θ的平方成正比，热晕聚焦非等晕校正残差与信标高度的1.71次幂成反比。
Compared with the conventional grating element and prism, the device had smaller size and higher spatial angular dispersion, nearly 30 °/nm in the range from 784.5 nm to 786.5 nm according to the measurement.
相对于传统的光栅和棱镜器件而言器件具有更高的空间角度色散，实际测试在784.5nm至786.5nm波长范围内器件的角色散达到30°/nm。
Sensitivity and resolution are two most important factors to measure the performance of the radio telescopes. The angular resolution is mainly determined by the size of the telescope; while the sensitivity is depend on the performance of the microwave receiver.
灵敏度和分辨率是衡量射电天文望远镜性能的两个重要指标，分辨率主要由望远镜口径大小决定，而灵敏度则是取决于微波接收机的性能。
It has many advantages, such as strong load-carrying capacity, high transmission efficiency, large angular velocity ratio, small in size and structure, etc.
它具有传动比范围大、传动效率高、承载能力强和结构紧凑等优点。
These records can be quantified to apparent scales (angular diameter) according to the Model of Celestial Sphere used by Chinese ancients. Then we can reduce the size to a brightness on the basis of some " standard points ".
这些记录可以按古人目视观测天象的天球模型进行视大小（角直径）的量化，进而可以用一些已知亮度的流星记录为标准点，将其归算为亮度。
The intervening matter between the source and the observer gravitationally deflects and focuses the light bundle, increasing the apparent angular size of the source.
光源与观测者之间的物质对光束产生引力偏折和聚焦作用，使光源的视角径加大。
This Bragg Equation is without limit on crystal size, can be used to describe the angular divergence of minicrystal diffraction, diffraction of thin crystal, and the integral intensity of polycrystal diffraction in positive lattice, etc.
广义布拉格方程不受晶体尺寸限制，可以在正空间中描述微晶体衍射的角发散，薄晶体的衍射，多晶体衍射的积分强度等问题。
Aimed at complex shape, with moderate size dimension and deep non-uniform diameter side hole of the part, symmetric four chambers in one die with angular pin structure was adopted.
针对塑件外形复杂、总体尺寸适中，且有较深不等径侧孔的情况，设计中采用一模四腔、对称布置，水平抽芯机构采用斜销结构。
The angular size has little influence upon the angular error, the characteristic of which determines the size marking form.
角度尺寸的大小对角度误差影响不大，这一特性决定了角度尺寸的标注形式。
Both the size and quantity of acicular Al_4C_3 increased with energy input, and the shape of gas pore changed from circular to angular.
随着热输入的增大，针状Al4C3的尺寸增大，而焊缝中的气孔由圆形变为不规则状。