numerical aperture

New measurement method of the numerical aperture of optical fiber;

一种新的光纤数值孔径测量方法

Measuring numerical aperture of microscope by projection method;

用投影法测量显微镜的数值孔径

Measuring the numerical aperture of fiber by improved spectrometer;

用改进的分光计测量光纤理论数值孔径

large core high numerical aperture fiber

大芯径大数值孔径光纤

Hence the value of high numerical aperture for such specimens.

因此对这标本需采用大数值孔径的物镜。

Research on Craft of Large Numerical Aperture Multiple-Composition Glass Flexible Fiber;

大数值孔径多组分玻璃柔性光纤工艺的研究

A new method for measurement of numerical aperture of photonic crystal fibers

光子晶体光纤数值孔径测试的一种新方法

Generation and Focusing Property with High-Numerical Aperture Lens of Vectorial Polarized Beam

矢量偏振光束的产生及其高数值孔径聚焦性质

Focusing of Partially Coherent and Circularly Polarized Bessel-Gaussian Beams Through a High Numerical-Aperture Objective

部分相干圆偏振贝塞耳-高斯光束经高数值孔径透镜的聚焦

In the next generation of optical disk system,GaN laser and high numerical aperture(NA)objective lens are two key components.

对于下一代光盘系统而言,GaN激光器和高数值孔径(NA)的物镜是关键组件。

Numerical Solution of the Limited Aperture Problem in Three-Dimensional Inverse Acoustic Scattering

三维有限孔径逆声散射问题的数值解

diameter and number of hole

喷嘴量孔孔径及数目

Pass Design and Application of Thin Diameter Tantalum Wire Rolling Based on Numerical Simulation;

基于数值模拟的细径钽丝轧制孔型设计与应用

The simulation of photo scanning tunnel microscopy image with a metal nano-rod afflicted to an aperture fiber probe

带纳米金属棒PSTM孔径光纤探针成像的数值模拟

Numerical Simulation of Heat-Transfer Characteristics of Swirling Impinging Jet with Micro-Aperture

微小孔径旋转冲击射流换热特性的数值模拟

Simulation of effect on flow by diameter of loop reactor distributor's aperture

环流反应器分布器孔径对流场影响的数值模拟

Generally, an aperture radius of two to three times the FWHM of the PSF is a good value.

一般的，孔半径设置为点扩展函数的半宽值的两到三倍比较好。

Numerical Simulation of Load Convey Mechanism of Large Diameter Super-Long Pile;

大直径超长钻孔灌注桩荷载传递机理的数值模拟研究

Influence of Pore Diameter Distribution on Porous Nickel's Pore Volume Fractal Dimention

孔径分布对多孔镍孔体积分形维数的影响

The diameter of such an opening, often expressed as an f - number.

孔径这种开口的直径，常以f数表示

F-number: The figures marked on the lens collar to indicate the size of the lens aperture in relation to its focal length.It is the ratio of the aperture diameter to the focal length of the lens.

光圈值:刻划在镜头上用来表示镜头孔径与焦距关系的比值。经过选择的数字成一系列。