1.
double - beam spectrodensitometer
双光束分光光密度计
2.
ultrascan laser densitometer
超精度扫描激光密度计
3.
integrating video microdensitometer
积分视频显微光密度计
4.
automatic scanning microdensitometer
自动扫描显微光密度计
5.
scanning reflective microdensitometer
扫描反射显微光密度计
6.
flying-spot microdensitometer
飞点扫描显微光密度计
7.
An apparatus for measuring the optical density of a material, such as a photographic negative.
（光）密度计测量材料，例如相片感光纸光密度的器械
8.
Design & Synthesis of Photochromic Compounds with High Optical Density;
高光密度光致变色化合物的设计合成
9.
In this definition, the contrast is given by the ratio of two light densities.
对比度定义为两个光密度之比。
10.
Methods and Uncertainty Evaluation on Optical Density of Laser Safety Glasses
激光防护镜光密度测量方法及其不确定度评定
11.
photoelectric pick counter
光电织物密度分析器
12.
spectral density
谱线[频谱，光谱]密度
13.
neutral density filter
中性密度滤光片简称
14.
optical density of smoke
烟的密度的阻光度的量度
15.
Fiber laser precision cutting of stainless steel stent of high linear density
光纤激光精密切割高线密度不锈钢支架
16.
Areal density resolution in hard X-ray digital imaging system
硬X光光电成像系统面密度分辨能力
17.
Determination on the sperm concentration standard of Russian sturgeon(Acipenser gueldenstaedtii)by means of spectrophotometric method
分光光度法测定俄罗斯鲟精子密度标准的研究
18.
optical transmission density
光学透射密度，即光学玻璃或器材的透光程度，是不透明度的对数