离焦

【purpose of the study of optical defocus myopia of young rhesus monkeys face up to the process.

研究近视性光学离焦对幼恒河猴正视化过程的影响。

This paper evaluates the influence of different defocus irradiation conditions on bone hard tissue ablation by pulsed CO2 laser.

评估了不同离焦辐照条件对脉冲CO2激光骨硬组织消融的影响。

Point spread function and Strehl ratio are used to evaluate the imaging quality of the system with different defocus parameters.

通过分析点扩散函数、斯特列比和离焦量的关系来评价三种不同掩模板对光学系统成像质量的影响。

Influence of different defocus conditions on bone hard tissue ablation with pulsed CO2 laser .

不同离焦条件对骨硬组织激光消融的影响。

The suitable defocus and crystal thickness for experiments and the truncation effect for the image deconvolution were also discussed.

同时也讨论了实验中对离焦量和晶体厚度的要求以及断尾效应对解卷结果的影响。

The accuracy of this method and some influencing factors such as image dimension, shooting angle, defocus and lens distortion were analyzed and the scope of application was studied.

对该方法的精度和一些影响位移测量的因素如图像大小，拍摄角度，离焦，镜头畸变等进行了分析，探讨了方法的适用范围。

One of the most powerful and attractive image restorations has been discussed, the regularization iterative method, derived from a set theoretic approach.

本文提出了一种在频率域进行图像正则迭代恢复的新方法，着重讨论了离焦图像的恢复问题。

The approach is based on the principle that the a pa rticle will form double points on the image plane when the particle is out of fo cus in an optical system with a two pinhole lens.

该方法是当利用双孔透镜成像时，单点粒子在离焦光学成像系统中会形成包含粒子空间信息的两点像，根据粒子像在像平面上的位置和间距可以获取空间粒子的三维空间位置。

"The advantage of our method lies in the smallness, flexibility and precision with which the illuminated area of material can be chosen," Dwyer told nanotechweb.org."Hence, the experimentalist can precisely select the area of material she wants to analyse, and be confident that the surrounding areas are not interfering with her analysis."

对电子显微镜而言，由於物镜工作距离的限制，电子探针与样品常常无法同时被聚焦，因此大部分采用平行式探针的实验都是在探针离焦(out-of-focus)下进行，不幸的是，这种方法会产生如夫奈尔条纹之类多余的图形，因而不如易从绕射图形中精确选出待分析的样品体积。

The related works have not been reported within our country till now.A project that using the solid immersion lens to focus the femtosecond laser pulses in three-dimensional optical data storage is first proposed.

在SIL飞秒三维光存储方面，首次提出将SIL用于飞秒激光三维光存储的方案，模拟了SIL离焦量与实际聚焦在介质内焦点位置及系统数值孔径大小的关系。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。