查询词典 achromatic aberration

The key for the optical design is confirming the F number of lens,and making the system aberration least by transforming the curvature of lens and the degree of lens tilt in the case of no ghost image damager.

设计的关键在于确定例行的透镜F数。并通过控制透镜的曲率半径和倾斜角度，在保证无鬼点破坏的情况下使得系统像差较小。

The decenter variable in the adjustable variables often brings the same kind of aberration as the position offset of the tilt variable does, so they are of considerable relativity.

调整变量中偏心变量和倾斜变量的位置失调常常会产生同种像差，存在一定的相关性。

In order to analyze aberrations qualitatively, a diffract model of centro-symmetrical optical system has been constituted to simulate the diffract pattern of primary aberrations and second aberrations. Then diffract pattern\'s character of each aberration has been analyzed, and the typical pattern with the value\'s change is given.

为了进行定性分析，文中首先建立了一个共轴旋转对称系统的光学衍射模型，模拟了初级像差和二级像差的衍射图像，并逐个分析了初级像差和二级像差的成像特征，给出了伴随波像差数值变化的典型(来源：8ebeAebBC论文网www.abclunwen.com)图像。

As the increase of the concentration of magnesium sulfate and time, the micronucleus and the chromosomal aberration of Vicia faba root tip cells increased first and then decreased.

且随着硫酸镁溶液浓度的升高和处理时间的延长，蚕豆根尖细胞的微核率和染色体畸变率均呈先上升后下降的趋势。

Results indicated that suppression of malignancy was observed in the hybrid cells, they became differentiated morphologically and functionally by:(1) changes in histochemical staining, nucleus-cytoplasm in ratio, and increase in cell size and nucleal heterochromation, but decrese in cell surface microvilli and number of nucleoli;(2) decrease of growth rate, mitotic index and DNA synthesis rate;(3) loss of the ability to growth in soft agar medium, and non-tumorigenic under heterotransplantation to nude mice;(4) reduction of chromosome number mainly of rat derivative and decrease in chromosomal aberration rate.

实验结果表明：（1）杂交细胞出现瘤细胞与网织红细胞杂交同样的表型逆转及去恶性化特征，主要表现在细胞体积增大、核质比例减小；DNA合同速率降低、分裂指数下降，细胞生长显著减慢；在软琼脂中不形成集落，在裸鼠体内失去了长瘤能力。

Z2Bn z$e0A0 Meshless method is a new numerical computation method that is developed rapidly in recent years. Without element mesh and based on the dispersed nodes to form approximate interpolative function dynamically, meshless method has distinct difference with traditional finite element method. Meshless method conquers the problems caused by mesh generation, mesh aberration and mesh move. With provides a new effective means to engineering problem, meshless method obtain highly recognition in international compute mechanics domain and engineering field.

6L！y6K1Q6h0k0 无网格方法是近年来迅速发展起来的一类新型数值计算方法，它们不借助单元网格而是基于离散结点动态构造近似插值函数，与传统的有限元方法有着显著的区别，克服了网格生成、网格畸变和网格移动引起的问题并为工程问题提供了一种新的有效分析方法，受到了国际计算力学界和工程界的高度重视。

For lensless magnification mode, the subtraction method was presented to eliminate the system total aberration to get the 3D phase information of the phase gating by using Fresnel approximation approach and the convolution approach, respectively.

在无透镜放大数字显微全息系统中，分别利用菲涅耳近似法和卷积方法再现原始物波前，并提出相减法消除系统主要球面误差，获得相位光栅的深度信息。

Structural aberration of chromosome is a main karyotype character of Lilium spp.

结论］染色体结构变异是其核型的主要特征，也是其进化的主要途径。

A new technique for aberration measurement of a lithographic projection system .

一种新的光刻机像质参数热漂移检测技术。

objective to study the effects of active carbon nanoparticles on the genotoxicity and teratogenicity of mitomycin c.methods using pce micronuclear test, chinese hamster lung cell chromosome aberration experiment and rat teratogenicity, to observe the toxicity of free mmc and the mmc absorbed onto acnp on heredity and reproduction.

目的 检测纳米活性炭对丝裂霉素的遗传毒理及生殖毒理学效应的影响。方法采用小鼠骨髓嗜多染红细胞微核试验、中国仓鼠肺细胞染色体畸变试验及致畸试验对受试物acnp-mmc进行遗传毒性及致畸性检测。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。