Cf fission neutron source
delayed fission neutron
迟延<分裂>中子
缓发裂变中子
延迟分裂中子
迟延分裂中子
缓发中子
缓发中了
fission neutron absorption
prompt fission neutron log
neutron-neutron(n-n)logging
neutron epithermal neutron log
neutron thermal neutron log
a group time delay equalizer circuit
acceleration delay compensation