Other environmental sampling was negative.

其它环境样本呈阴性。

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In the safeguards environmental sampling, analyzing isotopic ratio of single uranium-bearing particle in swipe samples was very important.

在核保障环境取样分析中，对含铀单微粒进行元素和同位素分析是十分重要的。

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These sources of error and uncertainty include variations in flare efficiency, mis-identification of flares, non-continuous sampling, and environmental effects like snow reflection.

这种误差来源和不确定性包括燃除效率差异、燃除的判断错误、不连续的采样、以及像雪花反射那样的环境影响。

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Nichols said cleanup crews will do environmental sampling in every office before the building will be reoccupied.

CNN: Fumigation largely succeeding in clearing anthrax

In contrast, universities have expertise in all the areas relevant to fracking social, environmental, human health and economic impacts, technological innovation and sampling design as well as a commitment to and reputation for rigor and objectivity in research.

FORBES: Fracking: A Role for Universities