The relation was analyzed among total integrated scattering (TIS) caused by surface roughness of DOES, tip radii of cutting tools and cutting feed.
本文在总结前人研究工作的基础上,介绍了金刚石车削和衍射光学技术国内外的发展状况和趋势,综述了衍射光学元件的基础理论及其加工技术,对衍射元件的金刚石单点车削技术中有关工艺参数及其对元件性能的影响进行了探讨,并分析了金刚石车削刀具刀尖半径和车削进给量对衍射元件微结构形状的影响;从加工表面粗糙度引起的光的散射出发,分析了刀具刀尖半径、进给量和散射量之间的关系,给出了定量分析结果;再结合衍射元件加工中的遮挡效应、加工时间等问题,给出了加工过程中选取刀具刀尖半径和车削进给量的一般性原则。
Free from astigmatism.Used of a compound lens in which the separate components compensate for the astigmatic effects of each lens.
消像散的消像散的，用于复合透镜，其中分隔部分抵消了每一个透镜的散光效果
The sobs ebbed away like ruined echoes
呜咽声像消散的回声似的微弱下来。
convertible unsymmetrical anastigmat
可变换的非对称消像散镜组
air-spaced double anastigmat
双分离对称消像散镜头
asymmetric anastigmat
非对称性消像散透镜
The past had blown away like the ashes in the waste paper basket
过去，就像废纸篓里的灰烬一样，已经烟消云散。
A360°Circular Holography Based on Michelson type Optscal Path
基于迈克尔逊光路的周视消色散像全息术
Design of 10° FOV Telecentric Off-Axis Three-mirror Anastigmatic Telescope
10°远心离轴三反消像散望远系统的光学设计
Image Denoising Algorithm with Nonlinear Diffusion Image Based on Region Homogeneity Measure
基于一致性测度的非线性扩散图像消噪算法
The resonator(astigmatic) can be compensated by inserting a suitable thickness Brewster plate in the cavity.
在腔内插入一定厚度的布儒斯特片可以部分消除腔的像散.
A wisp of white smoke dispersed to reveal a duck falling from the sky like a stringless kite.
一缕白烟消散，一只水鸭子像断线的风筝，从半空中坠下。
The images can be dispelled using the Deletrius spell.
这个影像可以用消影无踪来驱散。
Predictive Value of Perfusion Imaging to the Ablation Therapeutic Effect of Rabbit VX_2 Hepatic Tumor and Pilot Studies of MR Diffusion Imaging;
灌注成像对兔肝VX_2移植瘤消融疗效的预测及MR弥散成像的初步研究
evanescent:Vanishing or likely to vanish like vapor.
"渐渐消失的,消散的:消失的或象烟雾一样易消散的."
Who put the news about?
是谁散布这消息的?
And the sorrow that you know will melt away
你内心的悲哀将会消散。
The clouds have dispersed from the sky.
天空的云已消散了。
They may just pass over.
也许很快会消散的。