短語詞組短語pulsed neutron interrogation 脈沖中子探詢法subthreshold neutron interrogation technique 低于閾能的中子探詢技術(shù)active neutron interrogation [核]有源中子探詢法superthreshold neutron interrogation technique 高于閾能的中子探詢技術(shù)active neutron interrogation method 外加中子探詢法 返回 neutron interrogation