1.
Test method for specific optical density of smoke generated by solid materials
GB/T10671-1989固体材料产烟的比光密度试验方法
2.
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。
3.
double - beam spectrodensitometer
双光束分光光密度计
4.
Fabrication of high-aspect-ratio and high-density X-ray transmission grating
大高宽比、高线密度X射线透射光栅的制作
5.
Specific gravity is the ratio of the density of a substance to the density of water.
比重是某物质的密度与水的密度之比。
6.
ultrascan laser densitometer
超精度扫描激光密度计
7.
Objective: To determine the numerical value of light dense of sodium salicylate by colorimetric analysis, and calculate its plasma half life.
目的:用比色法测定水杨酸钠的光密度值,并计算血浆半衰期。
8.
photoelectric pick counter
光电织物密度分析器
9.
integrating video microdensitometer
积分视频显微光密度计
10.
automatic scanning microdensitometer
自动扫描显微光密度计
11.
scanning reflective microdensitometer
扫描反射显微光密度计
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.
flying-spot microdensitometer
飞点扫描显微光密度计
15.
split-field photometer
分场[对比]光度计
16.
medium density particle board
中密度碎料板-比重０．６－０．８
17.
an instrument for determining density or specific gravity.
测量比重或密度的仪器。
18.
Mercury has a much greater density than water.
水银的密度比水大得多。