Other environmental sampling was negative.

其它环境样本呈阴性。

youdao

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。

youdao

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

CNN: Fumigation largely succeeding in clearing anthrax