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variation characteristic
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  变化特征
    Aim To provide the reference of the comprehensive prevention and cure of the PM10 pollution in Baoji City,it was analyzed the spatial and temporal variation characteristic of atmospheric PM10 concentration in Baoji City.
    目的分析宝鸡市空气污染物PM10的时空变化特征,为宝鸡市PM10污染的综合防治提供依据。
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    By using the observed direct solar radiation data gained by the automatic sun tracking spectrophotometer CE-318, the optical depth, size distribution and extinction coefficient of atmospheric aerosol is calculated and by using the result of calculation, we analyse the variation characteristic of optical depth, size distribution and extinction coefficient of aerosols in Yinchuan systematically.
    本文根据全自动太阳分光光度计CE-318测得的太阳直接辐射数据,计算了银川地区的大气气溶胶光学厚度,反演了该地区的粒子谱分布和气溶胶消光系数特征,并利用计算的结果对银川地区的光学厚度、粒子谱分布和消光系数的变化特征做了比较系统的分析。
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    The variation characteristic of COD Loading in two types of rivers were revealed.
    分析了两种类型河流COD污染通量变化特征
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    Study indicated that the element which exceeded the environmental criterion of water bodies in this area is Hg and is Cu in the soil, the content variation characteristic of the elements in water bodies is similar to the variation characteristic of background value, but the content of elements in soil is widely discrepant to the background value.
    研究表明:此区水体中超过环境标准的元素为Hg、土壤中为Cu,水体中元素含量变化特征与背景值变化特点相似,土壤中元素含量与背景值相差较大;
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    Study on the variation characteristic of COD loading in rivers
    河流COD污染通量变化规律研究
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    5. The variation characteristic of pollutants in harvested and nonharveated sediments of reed wetlandsTwenty days after the harvest of reed, the concentration of organic matters (21.33 mg/L) and TN (1.04 mg/L) is lower than that in nonharvested plot.
    5.芦苇收割和未收割区底泥及水体中污染物的变化规律 芦苇收割20天以后,水中的有机质和TN浓度分别为21.33mg/L和1.04mg/L,均低于未收割区水体中的浓度。
短句来源
    Observational data of atmospheric PM10 in Zhuhai city from June 2000 to May 2001 was chosen to analyze the spatial and temporal variation characteristic of PM10 in 3 monitoring stations (Xiangzhou,Qianshan and Jida).
    选取2000年6月—2001年5月珠海空气中PM10的观测数据,分析其在3个监测点(香洲、前山和吉大)的时空演变特征。
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  variation characteristic
The accurate delineation of specific boundaries has no doubt been confounded by the diminutive size, nocturnal habits, and subtle morphological variation characteristic of mouse lemurs, which can make field identification of individuals problematic.
      
It is suggested that regulation of phenotypic expressivity of qualitative genetic potentialities can lead to a pattern of continuous variation characteristic of the quantitative traits.
      
It was apparent throughout the study that comparisons of microcosms and natural systems must account for the large variation characteristic of each.
      
The energy balance also shows an obvious daily variation characteristic.
      
Analysis on the spatial distribution variation characteristic of urban heat environmental quality and its mechanism
      
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using Terner's classification method of stability, the meteorological data, which were observed conventionally four times a day by the meteorological station of siping in the range from 1980 to 1986, are studied to calculate their stability time after time, and to obtain the statistical frequency means according to which each stability occurred in a day, a month, a season and a year. The variation characteristics of the air stability in siping are approached and the climate in the city is analysed.

本文选取四平市气象站1980~1986年,每日四次常规气象观测资料,利用修定的帕斯圭尔(pasquill)稳定度分类法,逐次计算其稳定度出现的年、季、月、时频率平均值,探讨了四平市大气稳定度变化特点,并进行了气候分析。

This paper discussed the monitoring results of TSP and its contents, the pollution degree and variation characteristics in a year. It is benificial to control air pollution, strengthen environmental mangernent and improve environmental quality in Lanzhou.

报导了兰州市一年内大气中TSP及其成分含量的监测结果、污染程度和变化规律,为兰州市进一步治理大气污染,加强环境管理,提高环境质量提供了科学依据。

The consistency, pollution degree and variation characteristics of twenty-eight TSP elements of Lanzhou atmosphere in one year was presented. The results was beneficial to enhance environmental management and improvement.

报导了兰州市一年内大气中TSP内的28种元素含量的监测结果,污染程度和变化规律.为兰州市进一步加强环境管理和治理,不断改善环境质量提供科学依据.

 
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