英语词汇average concentration怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

短语

1
Daily average concentration of various pollutants also has a close correlation with ground wind velocity.
各种污染物日平均浓度值与地面风速相关也非常好。
2
The average concentration of ozone, one of the most common pollutants, is about half its level in the early 1990s, when the air was at its dirtiest (see chart).
20世纪90年代，空气污染时最严重时（如图所示），臭氧这种最常见的污染物的平均浓度大约是安全浓度的一半。
3
The average concentration of particulates in city air during 2008, for example, was six times the ideal standard recommended by the World Health Organization.
以2008年全年的数据为例，北京市市区空气单位体积微小聚合颗粒数是世界卫生组织标准的6倍。

单词	average concentration
释义	average concentration 简明释义平均浓度：在一定时间内，某种物质在特定区域内的平均浓度。网络释义 1 ?平均浓度平均浓度短语 1 hour average concentration 小时平均浓度 2 time-average concentration 时均浓度 3 true average concentration 实际平均含量双语例句 1 Daily average concentration of various pollutants also has a close correlation with ground wind velocity. 各种污染物日平均浓度值与地面风速相关也非常好。 2 The average concentration of ozone, one of the most common pollutants, is about half its level in the early 1990s, when the air was at its dirtiest (see chart). 20世纪90年代，空气污染时最严重时（如图所示），臭氧这种最常见的污染物的平均浓度大约是安全浓度的一半。 3 The average concentration of particulates in city air during 2008, for example, was six times the ideal standard recommended by the World Health Organization. 以2008年全年的数据为例，北京市市区空气单位体积微小聚合颗粒数是世界卫生组织标准的6倍。
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