1) air-ion concentration
空气离子浓度
1.
The paper took Xuhui district of Shanghai for example, studied the temporal-spatial variety characteristic of air-ion concentration, and the correlativity between air-ion concentration and environmental factors on typical ground in different urban function-area.
本文以上海城市徐汇区为例，研究了城市不同功能区典型下垫面的空气离子浓度的时空变化特征及其与环境因子的相关关系。
2) negative air ions concentration
空气负离子浓度
1.
5 m s negative and positive air ions concentration about 21 plant communities of Shanghai,results showed that:the ability of increasing negative air ions concentration about plant communities was markedly compared with no greening,grass s capability was lowest and bamboo community was highest by LSD.
5m的空气正、负离子浓度进行了测试分析,结果表明:群落增加空气负离子浓度极显著高于水泥地,经多重比较发现草坪提高空气负离子浓度的能力最弱,竹类群落提高空气负离子浓度的能力最强;空气质量指数CI值呈正态分布,CI值在0。
2.
According to one year's observation on the change of negative air ions in Mountain Yuelu, the laws discovered are the following: (l)The law that the negative air ions concentration and air quality in Mountain Yuelu change with space is obvious.
本文通过对岳麓山空气负离子浓度一年的实地观测,发现岳麓山空气负离子浓度存在以下变化规律:(1) 岳麓山空气负离子浓度和空气质量空间变化较为明显,其负离子浓度和空气质量在东北坡和东南坡均先随高度的升高而升高,到海拔150m左右达到最大,然后又随海拔的升高而降低,存在较为明显的垂直变化且核心景区和非核心景区的空气负离子浓度和空气质量也存在差异,非核心景区要略好于核心景区。
3.
The chosen area for experiments is Hangzhou which is famous for its Shan-shui,and the negative air ions concentration is selected as the key measurement indicator which can represent the ecological benefits of the plants,good or bad of the ecological environment and related human health.
以著名山水城市杭州为研究区域,选取能够体现植物生态效益、标志生态环境优劣、与人体健康相关的空气负离子浓度作为主要测定指标。
3) air concentration
空气浓度
1.
The influence of air concentration upon heat transfer and pressure component was analyzed based on the theory of condensation heat transfer and the state equation of ideal gas,and the mathematic model of relationship between air concentration and condenser pressure was created in the paper.
基于凝结换热理论和理想气体状态方程,分析了空气浓度对凝汽器内传热和分压力的影响,建立了空气浓度对凝汽器压力影响的数学模型。
2.
The abnormality of vacuum tightness and the insufficient output of air extractor are general existent problems in many domestic power plants,which can cause increased air concentration in the condenser.
国内许多发电厂存在真空系统严密性差或抽气系统出力不足等问题,从而引起凝汽器内空气浓度增加。
4) ion concentration
离子浓度
1.
Relation between ion concentration and pH in precipitation in number of Chinese cities;
我国部分城市降水中离子浓度与pH值的关系研究
2.
Effects of ion concentrations of buffer on hybridization efficiency with new style PNA-LSAW gene sensor;
缓冲液离子浓度对新型PNA-LSAW基因传感器杂交效应的影响
3.
The results indicate that supersaturation degree depending on ion concentration is very important for controlling the shape and size of MnCO3.
结果表明:由反应离子浓度决定的溶液过饱和度是影响MnCO3粒度和形貌的关键因素,当离子浓度比[CO32-]/[Mn2+]在1～10范围内增大时,MnCO3粒度呈递减趋势;当[SO42-]/[Mn2+]在1～6范围内增大时,MnCO3的结晶速度减慢,而且晶型由不规则型向立方型过渡。
5) concentration
[英][,kɔnsn'treɪʃn] [美]['kɑnsṇ'treʃən]
离子浓度
1.
The influence of ion interaction and concentration to diffusion coefficient were discussed.
文章将电解质溶液视为三维网格模型,在不考虑温度和离子大小(阴、阳离子视为有大小相同的理想球体)影响的恒定电场强度下,利用M on te C arlo方法模拟研究了该体系中的溶质离子扩散特性,考察了溶质离子间相互作用及溶液离子浓度对体系离子扩散系数的影响,结果表明:不考虑离子间相互作用时,溶质离子的扩散系数为常数;考虑离子间相互作用时分三种情况,当溶质离子密度小于等于0。
2.
This paper gives a new method to determine the F -ion concentration in water solutions with which the F -ion concentration is determined.
本文给出一种用酸度计测定水溶液中Ｆ－离子浓度的新方法，利用该法对一价Ｆ－离子进行了测定。
6) ionic concentration
离子浓度
1.
Study on relationship between cervical cancer hela cell apoptosis inducing by electrochemical therapy and changes of different ionic concentration in external environment;
直流电治疗诱导宫颈癌HELA细胞凋亡与外环境离子浓度变化关系的研究
2.
Development of a novel instrument for pH and ionic concentration;
新型pH值和离子浓度测量仪的研制
3.
Effect of environmental and internal factors on the osmotic and ionic concentrations in the hemolymph of Fenneropenaeus chinensis;
环境因子和生物自身因子对中国明对虾渗透浓度和离子浓度的影响
补充资料：导出空气浓度
分子式：
CAS号：
性质：放射性核素的导出空气浓度DAC被定义为放射性核素的年摄入量限值ALI除以参考入在一个工作年(2000h)内吸入的空气体积(2.4×103m3)而得的商，即DAC=ALI/2.4×103Bq/m3。导出空气浓度DAC可供评价工作场所空气污染状况时参考。
CAS号：
性质：放射性核素的导出空气浓度DAC被定义为放射性核素的年摄入量限值ALI除以参考入在一个工作年(2000h)内吸入的空气体积(2.4×103m3)而得的商，即DAC=ALI/2.4×103Bq/m3。导出空气浓度DAC可供评价工作场所空气污染状况时参考。
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