英语语法分析

Note3: Actinide abundance ratios may be applied to measurements of stellar ages.

注3：锕充足比率可用于测量恒星的年龄。

The fission barrier parameters for actinide nuclei were obtained by analysis and calculations of fission cross-sections and complete neutron reaction cross sections.

通过分析和计算锕系核裂变截面和全套中子反应截面获取了一组锕系核的裂变位垒参数。

A radioactive transuranic element in the actinide series, artificially produced in trace amounts. Its longest-lived isotope is No255 with a half-life of3 minutes. Atomic number102.

锘在锕类元素中的一种放射性超铀元素，人工微量制造，其最长寿命的同位素是锘255，其。