1) density of radon
氡密度
1.
The separating out rate of radon was figured by the content of radium in the samples of construction material,through the mensuration of natural radioactivity and by measuring the density of radon that is released by the samples through ZnS sparking method.
通过天然γ能谱测量方法测定建材样品中的镭含量,计算理论上衰变产生的氡密度,以及用硫化锌闪烁法测定由样品释放到空气中的氡密度的方法来计算氡的射气系数。
2) Radon Concentration
氡浓度
1.
Variation rule of the radon concentration by season;
土壤氡浓度随季节变化规律
2.
The Temporal and Spatial Variations of Radon Concentration.;
氡浓度的时间和空间变化特征
3.
Radon concentration control system of radon chamber;
氡室氡浓度调控系统的研究
3) Concentrations of Rn-222 and Rn-220
氡、浓度
4) radon density
氡(Rn)浓度
5) Radon calibration chamber
氡刻度室
6) radon concentration field
氡浓度场
1.
The result shows that the location of return air intake has a great effect on the indoor radon concentration field, and it should be laid at the radon emission source, which the mixing of the radon in high concentration and the air in breathe area can be avoided.
本文建立了一个典型的地下空间模型,在三种不同的送回风方式下进行了室内氡浓度场的模拟。
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条