This paper introduced the principles and methods of historical reconstruction of Marine contamination based on high resolution molecular (element) stratigraphical records.
本文介绍了运用高分辨率的分子(元素)地层学记录来研究海洋污染历史的原理和方法。
In this paper, the natures, sources and characteristics of radioactive contamination are presented and particularly all kinds of radioactive contamination affecting the human lives are introduced.
介绍了放射性污染性质、来源和特点，重点介绍了各种影响人类生活的放射性污染。
We consider the problem of trace contamination being introduced accidentally during the production of ruminants feedstuffs containing constituents of animal origin.
我们认为，问题的痕量污染正在推行生产过程中不小心的反刍动物饲料含有动物成分的原产地。
应用推荐