查询词典 aperture

of designing an achromatic lens with F/#=1 and aperture D=5mm is developed and numerical simulation is performed.

利用这种特性，本文提出了一种变深度亚波长孔阵金属折衍混合透镜（DV- SHAM R/D lens），它是由DV- SHAM lens与折射透镜结合，能够消色差，实现宽波段成像。

In addition, a dedicated UHF synthetic aperture radar will image under trees.

此外，专门的UHF合成孔径雷达可以形成树叶下的图像。

In order to develop flexible fabric keyboard ,many different styles of matrix aperture fabric are designed by using terylene as raw material through modifying fabric stitches and adjusting processing parameters.

为了开发柔性织物键盘，选用涤纶长丝为原料，通过改变组织结构和调整工艺参数，设计了多种矩阵孔状织物，使其产生不同的孔状效应。

Here the diffractive lens – Fresnel lens is used because the Fresnel lens has several advantages such as much larger aperture, thin and light.

在这里，所采用的是绕射式的Fresnel透镜，因为Fresnel透镜有孔径大薄和轻的优点。

A method for preparing planar light waveguide by using ultra-short laser pulses includes such steps as using low-aperture N.A.

本发明公开了一种利用超短激光脉冲制备平面光波导的方法。根据制备平面光波导所需的宽度，选用N.A。

The original technology is based on the far-field optical but all of them are restricted by Rayleigh diffraction limit.In order to break optical diffraction limit restrictions, people improve recording density in three ways:(1) shorten wavelength of light,(2)increase numerical aperture of the lens N.A.

不过上述储存方式所采用的记录技术皆是在远场光学的领域内，在远场光学的绕射极限下，要持续提升记录密度的方法有三种；(1)缩小光源波长(2)提高透镜的数值孔径

This is not an ordinary box, which is used as a background picture of the dialog box, very pretty.

详细说明：这可不是一个一般的对话框，它是用图片作为背景的对话框，非常好看。

Conceal me what I am,and be my aid for such disguise as haply shall become the form of my intent.

遮掩我的身份，帮助我，我的面具将成为我的目的。