短语词组短語neutron -capture prompt y-ray 中子俘獲瞬發γ射線therapy neutron -capture 中子捕獲療法thermal neutron -capture 熱中子俘獲fast -neutron capture 快中子俘獲thermal -neutron capture 熱中子俘獲slow -neutron capture 慢中子俘獲 返回 neutron capture