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dependence
raraki
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เมื่อ » 2022-06-22 20:19:13 (IP : , ,103.107.196.213 ,, )
which has the strongest dependence on the area of testing Radionuclides can persist in the stratosphere. from several months to many years During this time, the short-lived isotopes decay. while the number of longevity elements It remains practically unchanged, such as 90Sr , 137Cs , so the stratosphere is a type of reservoir. For the accumulation of long-lived fission debris with a half-life of 7 months to 1 year, the effect of new
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