fissionedv.分裂adj.分裂的fissionn.分裂；裂变；【生】裂殖fission cross section核分裂截面,裂变截面fission pulse counter脉冲裂变计数器fission track analysis裂变径迹fission chain reaction裂变链式反应fission-track dating裂变轨迹年代测定法,裂变径迹测年fission product damage裂变产物损伤fission radiochemistry裂变放射化学fission-neutron flux裂变中子通量fission dadiochemistry裂变放射化学fission product burner裂变产物燃烧器