定义 中文名称：本底污染 英文名称：background pollution 定义：水域不受局部水体污染影响的中尺度水体平均污染状况。在新开发的养殖区环境评价中也指开发前的污染状况。 应用学科： 水产学（一级学科）；渔业环境保护（二级
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... atmospheric[al] pollution 大气污染 background pollution 背景污染,本底污染 chronic pollution 慢性污染,长期污染 ...
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background pollution observation 本底污染观测
Background Air Pollution Monitoring Network 本底空气污染监测网 ; 气象组织本底空气污染监测网
background air pollution [环境] 背景空气污染 ; 本底空气污染
As lead and arsenic pollution element are skew distribution, statistics of a natural background value and a content of lead and arsenic are worked out using median method of skew distribution.
由手铅、砷污染元素呈偏态分布，故采用偏态分布中的中位数法作了铅、砷自然背景值及含量的统计。
BACKGROUND: Environment pollution due to lead is severe day by day, and the lead-induced developmental toxicity of central nervous system is prominent.
背景：环境铅污染日趋严重，铅致中枢神经系统发育的毒性较为突出。
Based on the analysis of the malodorous black water bodies' background, the serious organic pollution of rivers and obvious tendency to eutrophication were demonstrated.
根据对其黑臭的背景分析，发现水体有机污染较严重，河道富营养化趋势较为明显。
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