Helium is the by product of millennia of radioactive decay from the elements thorium and uranium.
氦是钍和铀元素数千年放射性衰变的副产品。
NUCLEAR power does not emit greenhouse gases, but the technology does have another rather nasty by-product: radioactive waste.
核能发电不会排放温室气体，然而这项技术的确存在另一个不好对付的副产品：放射性核废水。
These teeth were then tested to determine their level of Strontium-90, a radioactive fission product that escapes in nuclear power plant emissions.
这些乳牙都要经过测试，以确定它们的锶- 90的积存程度。锶- 90是一种核裂变的产品，它们会从核电站的排放物中逃逸和扩散。
Japanese milk powder maker Meiji has recalled its baby formula after discovering radioactive caesium in the product.
日本的奶粉制造商明治乳业在产品中发现放射性元素铯后已召回其婴儿配方奶粉。
As a product from the uranium disintegration, radon is a natural radioactive idle gas.
氡是天然放射性惰性气体，是铀系衰变链中的一个衰变产物。
The laboratory equipment was suitable for remote operation with highly radioactive solutions, and study of fission product behavior in solvent extraction at short residence times.
在处理高放溶液时，这种设备可以远距离操作，并可以进行短停留时间条件下裂变产物在溶剂萃取过程中的行为研究。
The product has no radioactive contamination, the surface smooth, easy to clean, good gloss, corrosion resistance, high strength, safe, etc. , is truly "green" products.
其产品具有无放射污染，表面光洁、易清洗、光泽好、耐腐蚀、强度高、使用安全等优点，是真正的“绿色环保”产品。
The overall production process does not involve any radioactive substances harmful to human body, assuring product being safe, healthy, green and natural.
整个生产过程中不使用任何对人体有害的辐射性物质，确保产品安全健康，绿色天然。
In the presence of naturally radioactive isotopes and fission product...
程序在有天然放射性同位素和裂变产物存在下也是可用的。
In the presence of naturally radioactive isotopes and fission product...
程序在有天然放射性同位素和裂变产物存在下也是可用的。
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