查询词典 aberration

Speckle is also the fundamental uncertainty factor in this kind of sensors. The analytic expression of centroid uncertainty limit is derived from the statistic of laser speckle, and it is shown that the uncertainty limit in RST, and also in anamorphic triangulation, is dependent on the solid angle subtended by entrance pupil as seen from the illuminated laser spot, the triangulation angle, as well as the laser wavelength. The influence of aberration of optical system and surface roughness are also discussed.(4) A method of getting the 3D edge characters based on the integrated vision system is studied.

重点研究了RST中的激光散斑现象，从散斑统计学的角度，首次推导了激光散斑引起的旋转对称三角法位移测量不确定度的极限，结果表明在光学粗糙表面上，该极限由投射激光波长，光学系统入瞳对投射光斑所张的立体角，以及光学系统主光轴与旋转轴的夹角确定；这一结论同样适用于其他变形成像的激光三角法。4基于RST的工作方式，研究了利用集成视觉系统的扫描移动来获得被测物体的低分辨率三维信息的方法。

The aim of study was to investigate the importance of chromosome aberration in differential diagnosis of eosinophilia and the chromosomal aberrations involved in patients with clonal eosinophilia. 65 cases of eosinophilia were collected and chromosome specimens of bone marrow cells were prepared by 24hour culture, and Gbanding technique was used for karyotyping.

为探讨染色体异常克隆在嗜酸性粒细胞增多症诊断和鉴别诊断中的意义及克隆性嗜酸性粒细胞增多症涉及的染色体异常，收集了65例嗜酸性粒细胞增多患者的骨髓标本，培养24小时，采用G显带进行核型分析。

The results showed that arginine esterase could not affect CHL cell growth and chromosome aberration at the above concentrations.

试验结果表明，精氨酸酯酶在上述浓度对CHL细胞的增殖没有抑制作用，对CHL细胞的染色体结构也没有影响。

Optimists will argue that the extortionate oil prices of July were an aberration, the result of unwholesome speculation divorced from the reality of supply and demand.

乐观人士分辩道，7月份的超高油价超出了常规，结果导致实际的供需求同非健康的推测分离开来。

Fast lenses of this optical design shift the focus due to spherical aberration when the f-stop is changed.

采用这种设计的大光圈镜头，在使用不同的f值时，球面相差也不同，导致焦点变化。

By that time, however, the situation had greatly improved in the Eastern Church- nearly all the bishops who had taken part in the Robber Synod had now repented of their aberration and signed, in union with their orthodox colleagues, the "Epistola dogmatica" of Leo to Flavian, by this act rendering the need of a council less urgent.

到那个时候，不过，这种情况已大有改善，在东部教会，几乎所有的主教，谁参加过在匪徒的主教现在已经忏悔，他们的畸变，并签署了，在联盟与东正教会的同事，" epistola dogmatica "利奥向弗拉维安，由该法绘制需要一个会较不迫切。

Zonal chromatic aberration of the objective is 0.13 mm at focal length 800 mm,and the triplet combination of the fluorite glasses and some heavy flint type glass is effective to correct color aberrations.

结果表明，采用氟化物玻璃与重火石玻璃的三片式组合在短波红外段具有较好的消色差能力。

MATERIALS AND METHODS: The root tips of Vicia faba were treated with different concentrations of sodium sulfite and sodium nitrite (in the concentrations of 25;50;100;200;400 mg/L) with distilled water as control for four hours.The root tips of Vicia faba were stained with carbol fuchsin and examined. The micronucleus rate and the rate of chromosome aberration were determined within root tip cells of Vicia faba.

材料与方法：用不同浓度的亚硫酸钠和亚硝酸钠(25、50、100、 200、400 mg/L)分别处理蚕豆根尖4 h，并以蒸馏水作为对照，用石炭酸品红染液染色，分别观察、测定蚕豆根尖细胞的微核率和染色体畸变率。

The relation between the accumulative ultraviolet irradiation time and the chromatic aberration of 2-D color barcodes is analyzed based on the CIELAB model. The detection results of four-color printed label show that the fading velocity of fuchsine is faster than cyan, yellow and black.

基于CIELAB模型分析紫外辐照累计时间与二维条形码色差的关系，对4色打印标签的检测结果表明：品红色褪变速率较大，青色、黄色和黑色的褪变速率逐次减小。

Chapter 2、When treat propagate problem of high power laser beams, ordinary assume beam to be ideal plane wave or Gaussian. Actually, beams is not ideal Gaussian or plane wave. The reason is that is phase aberraed and intensity nonuniform. In this chapter, we have developed a method on frequency conversion of aberrated beam. Based on statistical optics method and within the limits of thin crystal, we have studies on second harmonic generation of the phase aberrted beam. And the phase aberration is assumed to be a Gaussian random variable.

第二部分：在处理高功率光束传输问题中，通常假设光束为理想平面波或高斯型，而实际光束都不可能是理想的高斯光束或平面波，均会有一定的位相畸变及光强不均匀，本部分从统计光学的观点出发，在薄晶体近似下，建立了具有高斯型随机相位畸变光束倍频转换的一种统计描述方法，并对倍频转换光束的横向空间特性进行了分析。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。