N a radioactive series that starts with uranium-238 and proceeds by radioactive decay to lead-206 铀系 [physics]
uranium actinium series锕铀系
uranium-series isotopes铀系同位素
uranium-series铀系
Uranium-series Chronology铀系年代学
uranium decay series铀衰变系
uranium radium series铀镭系
uranium-series dating轴系年龄测定法
uranium m series铀系
uranium-series dating method铀系法
N（名词） a radioactive series that starts with uranium-238 and proceeds by radioactive decay to lead-206 铀系 [physics]