surface contamination

基本解释

The results showed the surface contamination produced in sample preparation and treatment can be eliminated if the sample was sputtered for enough time.
实验表明：样品经足够长时间的溅射，可以消除样品制备和处理过程中的表面污染，可以为其它高纯材料的检测提供可靠的科学依据。
A three layer of aluminum exposed to atmosphere is identified: the aluminum and its native oxide, the corrosion layer atop oxide aluminum, and a surface contamination layer.
暴露于大气中的铝表面呈现三层结构，即氧化铝和氢氧化铝层、其上的腐蚀产物层和最上层的污染物沉积形成的污染物层。
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However, investigation shows that the leakage current is affected not only by the surface contamination of insulator but also by the environmental factors such as temperature, humidity, and so on.
研究表明，泄漏电流除了与绝缘子表面的污秽状况有关外，还受温度、湿度等环境因素影响，并且与各因素之间存在复杂的非线性关系。

And what prevents soil and surface water contamination from countless units that ultimately wind up in landfills?
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In Washtenaw County and Ann Arbor, Michigan a 1, 4-Dioxane, in groundwater and surface soil contamination from Gelman Science, persists after nearly 20 years of cleanup activities and has now spread in groundwater to an area over three miles long and a mile wide.
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The remaining soil contamination is located several feet below uncontaminated surface soil.
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