characteristic energy短语¹⁴⁴⁹⁷²⁺² 基本例句 特征能量 A log of elemental concentrations derived from thecharacteristic energylevels of gamma rays emitted by a nucleus that has been activated by neutron bombardment.记录元素浓度的测井方法，利用中子轰击原子核，使其激活后释放出伽马射线，根据伽马射线的特征能量级可获得元素浓度。