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。
This is the most common element in the universe and so could come from many sources, but the fact that it tends to coincide with heavy-element pollution is telling.
氢是宇宙中最普遍的元素，可以有多种来源，但是它总是倾向于与重元素污染并存这一事实才是关键。
Pollution of hydraulic medium was a main cause that made hydraulic element wear earlier.
液压介质的污染是液压元件过早磨损的主要原因。
Phosphorus was not only the essential nutritional element for plants and animals, but also significant factor of environment pollution.
磷不但是动植物必需的营养元素，也是重要的环境污染因子。
To investigate inorganic element pollution status in road cumulated dust in Wusong industry and nearby areas.
了解上海市吴淞工业区及周边地区道路积尘中无机元素的污染状况。
Used ion-exchange filter element could be recycled by producer and no pollution will happen.
用过的离子交换树脂滤芯可由厂家再生处理，不会对环境造成污染。
During the combustion process of coal, the nitrogen element in coal may turn to various oxides of nitrogen, thereby, resulting in ambient pollution.
煤中氮元素在煤燃烧过程中会转化为各种氮的氧化物，从而造成环境污染。
The earthworm had a very strong ability to concentrate the heavy metal element, and the ability increased along with the increase of soil metal pollution.
蚯蚓对重金属元素具有很强的富集能力，且随土壤污染程度增加而增加。
The environmental pollution caused by cadmium, a heavy metal toxic element, has aroused geologists' attention.
镉是重金属有毒元素，其环境污染一直是众多学者研究的焦点。
Water is the most important element in the world for the nourishment and life of all living things, yet in reality, it is threatened by the effects of pollution, overfishing and waste.
水是滋养地球上所有生命最重要的元素，可是水资源却受到污染、过度捕捞、和浪费的严重威胁。
Oxygen bomb combustion method, which destroys the organic substances, is both simple and convenient as well as fast in operation, and pollution free in element analysis.
以氧弹燃烧法破坏有机物进行元素测定，方法简便、快捷、无污染。
[Objective] To investigate inorganic element pollution status in road cumulated dust in Wusong industry and nearby areas.
[目的]了解上海市吴淞工业区及周边地区道路积尘中无机元素的污染状况。
Quadratic finite volume element methods for the air pollution model in one-dimensional;
本文应用了有限刚体元方法对柔性翅翼进行建模和分析。
The sulfur amount of the leaves presented a certain relativity to the distance from the pollution source. (7) the content of heavy metals element in different plants was different.
叶片含硫量与离污染源距离呈现出一定的相关性。(7)不同的植物叶片其重金属元素含量不同。
The results. h. w that under pollution condition, tree ring width and its element content varied sharply, which are closely …
追溯和重建沈阳地区的生态环境变迁史，揭示城市环境质量与树木年轮变异之间的相关规律。
The results. h. w that under pollution condition, tree ring width and its element content varied sharply, which are closely …
追溯和重建沈阳地区的生态环境变迁史，揭示城市环境质量与树木年轮变异之间的相关规律。
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