unstable isotope
常见例句
- Each element has at least one isotope with unstable nuclei that can undergo radioactive decay .
每個元素至少有一個同位素不穩定原子核可以進行放射性衰變。 - Being a company of utter geeks, Google called this beta test laptop the Cr-48 after the chemical name of an unstable isotope of the chrome element.
FORBES: Names You Need to Know: Cr-48 - Fission comes from the relatively unstable isotope u-235.
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