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。
These teeth were then tested to determine their level of Strontium-90, a radioactive fission product that escapes in nuclear power plant emissions.
炸弹的副产品之一的放射性同位素锶-90扩散到空中，降落到地面，被奶牛摄取，然后通过牛奶供应传递出去。
The radioactive isotope Strontium-90, one of the by-products of the bombs, spread into the atmosphere, fell onto the land, was ingested by dairy cows and passed into the milk supply.
企业核心竞争力的培育是从核心技术、核心产品到核心能力以及核心能力的扩散、转移、聚集和整合的过程。
The enterprise core competence grows form the core technology, core product to the proliferation between core capabilities enhance to bring the scale economy for the enterprise.
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