naturally occurring isotope 中文意思是什麼
naturally occurring isotope
解釋
自然界存在的同位素-
Radioactive matter is incorporated into plants, which are then eaten by animals with the result that most foodstuffs have a measurable amount of radioactivity. additional radioactivity in food comes from the naturally occurring isotope carbon 14. some cosmic radiation also reaches sea level
植物亦混有輻射物質,而動物吃掉植物,以致絕大部份食物也含有一定輻射食物輻射也來自天然的同位素碳十四,此外,宇宙輻射亦可穿越大氣層照射到海面。 -
Polonium - 210, a naturally occurring isotope of polonium, is found in all environmental media, such as in soil, air and even in human body, at very small amounts
釙210是釙元素的一個同位素,在所有自然環境中,例如泥土大氣以至人體都可以找到極少量釙210 。
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