A superior programmable optical attenuator developed based on the attenuating principle of grey-scale neutral density filter and the control technology for optic-electric rotary encoder,achieves excellent performance which includes attenuation accuracy(±0.
基于灰度级中性密度滤光片衰减原理和光电旋转编码器控制技术研制成功的高性能程控光衰减器,取得了优良的衰减准确度(±0。
neutral density filter
中性密度滤光片简称
filter type flame photometer
滤光片式火焰光度计
automatic filters spectrophotometer
自动滤色片分光光度计
More filter windows of filter wheel, better precision and accuracy.
滤光轮，其滤光片越多，分析也就越有针对性，精准度更好。
Using the Genetic Algorithm to Study the Multiple Annular Filters for the High Density Storage System;
应用遗传算法研究用于高密度信息存储的多元环形滤光片
spectral response of stripe filter
条状滤色片的光谱特性
Use a neutral-density filter or simply select a smaller aperture (larger number aperture setting) as necessary.
这时必须采用自然密度的滤光片或简单地减小光圈（选用较大的光圈数值）。
Study of improving measuring dynamic range for bio-chemical detection by neutral filter
中性滤光片提高生化检测动态范围的研究
Accessories:High grade PP overflow, filter &stopper.
附件：高密度PP去水、滤片和阻水盖。
close-up filter
近摄滤光片，由+1至+10屈光度
Correlative analysis of appropriate exposal dose, CR film quality and film density
曝光量、CR影像质量与照片密度相关性分析
The effects of coloured light filter overlays on reading rates in age-related macular degeneration
彩色滤光片对老年性黄斑变性患者阅读速度的影响
Study on Linear Tuning Filters Based on Interference Thin Film Filters;
基于薄膜干涉滤光片的线性调谐光滤波器研究
Numerical Analysis of Optical Characteristic of Liquid Lyot Crystals Filters
液晶利奥滤光片光学特性的数值分析
optically flat filter
光平面滤光片;光学扁平滤光器;光学平面滤光片
Spectral Energy Density in a Kerr Nonlinear Blackbody;
克尔非线性黑体中光谱能量密度研究
Properties of MDPE speciality resin for fiber jacket
中密度聚乙烯光缆护套专用料的性能
The Development of a Real-time Transmittance Measuring System for Linear Variable Neutral Density Filters
线性渐变滤光片透过率实时测量系统