以下为句子列表：
英文: Models of element synthesis during the supernova explosions predict that the abundance ratios of actinides with respect to other stable elements heavier than iron are very sensitive to the environment of the explosion, such as the entropy and the ratios o
中文: 模型元素的合成,在超新星爆炸预言的丰度比锕对于其他稳定更重的元素,比铁很敏感,对环境造成的爆炸,如熵和比例的质子,中子和电子.
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英文: Note 3: Actinide abundance ratios may be applied to measurements of stellar ages.
中文: 注3:锕充足比率可用于测量恒星的年龄.
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英文: Since the unstable nuclei exist between actinides, including thorium and stable nuclei like lead and bismuth, explosive events such as supernovae are required to produce actinides.
中文: 自不稳定核之间存在着锕系元素,包括钍和稳定核像灌了铅,铋,爆炸性事件,如超需出示锕.
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英文: Their discovery marks the first abundance determination of the actinides element thorium in a star beyond the Milky Way, and follows the detection of thorium in more than ten stars within the Milky Way.
中文: 他们发现,标志着首丰测定的锕系元素钍星以外的银河系,跟检测钍十余恒星的银河系.
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