Experiments demonstrate that scatter light is increased with the increase of smoke concentration in a given scale; that scatter light has to do with its wavelength, there being an optimal scatter light wavelength; and that with the change of Smoke concentration, scatter light manifests three character regions.
<正> 目前,国内公安消防部门在烟雾浓度测试时,规定使用某地生长的有一定干燥度的核桃壳,适当处理后在特定装置内进行不充分燃烧,以此作为烟源进行烟雾浓度的测量。
The experimental results show that four kinds of ocean tiny algae s chlorophyll contents continuously decrease with the ratio concentration of hydroxyl radical increasing.
实验结果表明,随着羟基比值浓度的升高,4种单细胞藻的叶绿素含量不断减少,当羟基比值浓度达到0。
Investigation of Environmental Smoke Concentration in Public Places Without Smoking Ban
非禁烟公共场所环境烟草烟雾浓度调查
Design of a Smoke Concentration Measurement System Based on Light Extinction Method
基于消光原理的火灾烟雾浓度测量系统研制
a shroud of fog, smoke, etc
一片浓雾、 烟雾等
Effects of tobacco smoke on indoor airborne particles
烟草烟雾对室内空气颗粒物浓度的影响
Heavy, dark, or dense, as smoke or fog.
烟雾浓密的烟或雾浓、重或黑的
The newly-developed smog alarm system will trigger the alarm once smoke or fog reaches certain degree.
新开发烟雾报警系统．要碰到一定浓度的烟或雾．会自动发出警报，让您的居家更为安全舒心。
2 swelling mass(eg of smoke or fog)like a wave
如波涛滚滚之物（如浓烟或浓雾）.
the density of a forest, the fog, etc
森林的密度、 雾的浓度.
(of a vapour or the atmosphere)not clear; dense
（指汽、烟、雾或空气）不清澈的,浓的
The smoke grew heavier and thicker till it looked like a great fog.
烟变得越来越浓，象大雾一般。
He gaped vaguely at the thick haze in the distance.
他茫然地盯着远处浓厚的烟雾。
I won't go out as long as there is heavy smog.
只要有浓重烟雾，我就不外出。
The thick smoke made it hard for people to breathe.
浓烈的烟雾呛得人喘不过气来。
When it was over, more than 4,000 people had been killed by the thick black smog.
当烟雾消散时，有4，000多个市民死于这片浓黑的烟雾。
thick fog, mist, cloud
浓雾、 重雾、 密云
The sun shines through smoke from shelling in the besieged Nahr el-Bared refugee camp near Tripoli in Lebanon.
黎巴嫩的黎波里外难民营，阳光透过浓重的烟雾。
a bomb that gives off thick smoke when it explodes; used to make a smoke screen or to mark a position.
当爆炸时产生浓烟的炸弹；用来制造烟雾或标志位置。
The mist was so thick that visibility was down to only ten metres.
雾非常浓，能见度降到了只有十米。
