例句與造句

1. After prompt fission neutron emission the residual fragments are still neutron rich and undergo a beta decay chain.
2. However, without addition of a neutron poison or active neutron-absorber, " decreases " in fission rate are limited in speed, because even if the reactor is taken deeply subcritical to stop prompt fission neutron production, delayed neutrons are produced after ordinary beta decay of fission products already in place, and this decay-production of neutrons cannot be changed.
3. It's difficult to find prompt fission neutron in a sentence. 用prompt fission neutron造句挺難的