In 2007 , the average daily fine particulate concentrations were significantly lower than would have been reported if the stations in traffic areas continued to be used 2007年，如果仍采用从城区那两个机动车污染监测站收集的数据，那么可吸入颗粒物的日平均浓度会大大高于政府正式公布的水平。
As mentioned in section ( a ) above , the average concentrations of the major air pollutants as recorded at the roadside air quality monitoring stations have been dropping over the past five years （二）如上文（一）所述，本港路边空气监测站在过去五年所录得的主要空气污染物平均浓度均有所下降。
This improvement equals nearly 10 % of the average daily fine particulate level , and is far larger than the minor improvement reported in fine particulate concentrations between 2002 and 2006 这种“改善”相当于可吸入颗粒物的日平均浓度降低了近10 % ，远高于政府公布的2002至2006年期间可吸入颗粒物日平均浓度的改善幅度。
During long - term drug therapy , the extent of absorption is the more important measurement because average concentration depends on it ; the degree of fluctuation is related to the absorption rate constant 在长期药物治疗期间，吸收的分量测量指标更重要，因为平均浓度就是根据它来计算的，而浓度的波动程度则与吸收速率常数有关。
Note : 1 , the maximum average concentration of planktonic bacteria law numerical brackets . 2 , the concentration of bacteria measured the direct result of the settlement and not the result of planktonic conversion act 注： 1 、浮游法的细菌最大平均浓度采用括号内数值。 2 、细菌浓度是直接所测的结果，不是沉降法和浮游法互相换算的结果。
Longer term trends in air pollutants show increases in annual average concentrations of no2 , decreases in so2 , and consistently high levels of particulates with both tsps and rsps being close to their respective air quality objectives limits 空气污染物含量的长远趋势显示，二氧化碳的平均浓度会按年上升，二氧化硫浓度则按年下降，而空气的悬浮粒子含量持续处于高水平，悬浮粒子总量及可吸入悬浮粒子更接近空气质素指标的上限。
The results of monitoring , from june to august in 2001 , showed that the average concentration of nitrogen and phosphorus in runoff varied strongly , the loss concentrations in the cultivated lands such as sweet potato land and orchard land were higher than those in uncultivated lands such as grassland and woodland 降雨径流中总氮、总磷平均浓度变异较大，总体说来，红薯地和园地等有人工耕种的坡地氮、磷流失浓度最大，草地和林地等受人工影响干扰少的坡地流失浓度相对较少，高坡度林地流失浓度大于缓坡林地。
The characteristics of shadow - mask pdp are compared with those of coplanar - electrode pdp by eme model . the result shows that the shadow - mask pdp has many advantages , such as the greater mean value of the particle densities , the higher response speed and discharge efficiency . moreover , how to optimize the cell structure of shadow - mask pdp has been investigated 模拟结果表明，在相同的模拟工作电压下，荫罩式结构中的各种粒子的平均浓度均比表面放电式结构提前达到峰值，且平均浓度的最大值比表面放电式高，放电效率也高于表面放电式结构，这意味着新型荫罩式结构的亮度高，响应频率快。
4 . the image explanation is performed by way of advanced information processing technology . the automatic identification techniques of two phase flow regime in the pipe are researched based on image explanation , as well as the calculation model of average concentration and mass flowrate of flowing particles 利用现代信息处理技术进行图像解释，研究了基于图像解释的两相管道流流动状况(流型)的自动机识别技术，以及建立了基于图像解释的流动颗粒平均浓度和质量流量的计算模型。
This thesis is aimed to study the flow field in circulating fluidized bed ( cfb ) holier in cold state based on the system of particle image velocimetry ( piv ) , several parts are included : the distribution of particles velocity in cfb boiler including radial velocity and axial velocity of particles ; the average radial and axial concentration distribution of particles in cfb boiler ; the average radial and axial size distribution of particles in cfb boiler 本文采用piv系统对循环流化床锅炉冷态流场进行了试验研究，研究的主要内容包括：循环流化床冷态流场粒子的速度分布特性，包括粒子的径向速度和轴向速度分布；循环流化床颗粒的平均浓度沿径向和轴向分布特性；循环流化床颗粒平均粒径的轴向和径向分布特性。
