常見例句雙語例句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(wěn)定原子核可以進行放射性衰變。權(quán)威例句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-48Fission comes from the relatively unstable isotope u-235.FORBES: Companies, People, Ideas 返回 unstable isotope