fissionedv.分裂adj.分裂的fissionn.分裂；裂变；【生】裂殖fission-type reactor核裂变反应堆fission-product gamma裂变产物γ辐射fission type size valve分体式浆液阀fission neutron therapy裂变中子疗法fissioning distribution裂变分布fission of uranium atom铀原子裂变fission product fallout裂变产物散落fission-product family裂变产物链fission air conditioning分体空调Fission chamber detector微裂变室探测器