查询词典 angular aperture

Of course using such film means ISO speeds of under 100, which means that a tripod, cable release and mirror lock-up are a necessity when combined with the use of the lens' optimum aperture.

当使用最佳光圈时，你还应该同时使用ISO100或者更低速的胶卷（如ISO50的 FUJI VELVIA －译者注），相机的反光板锁定功能，三角架，以及快门线。

Of course using such film means ISO speeds of under 100, which meansthat a tripod, cable release and mirror lock-up are a necessity whencombined with the use of the lens' optimum aperture.

当使用最佳光圈时，你还应该同时使用ISO100或者更低速的胶卷（如ISO50的 FUJI VELVIA －译者注），相机的反光板锁定功能，三角架，以及快门线。

Study of property of aperture Bessel beam.

干涉理论对Bottle beam的描述。

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

Based upon our first paper and continuing the "Standard candle" classification by use of the component linear distance D, we attain to the following statistical correlation of some type of Quasars with largest angular diameter Q_: the correla- tion between visual magnitude and redshift; the correlation between its absolute magnitude, radio-luminosity of single frequency, integral radio Iuminosity, colour in- dex difference Q and D.

本文在第I部分的基础上，继续用类星体射电子源线距D进行"标准烛光"分类，经过统计分析，得到了子源角径最大的一类类星体的一些统计规律：它的视星等与红移之间，它的绝对星等、单频射电光度、积分射电光度和色指数差Q与D之间有很好的相关性等。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。