And the first order approximate solution in the cases of hard excitation and soft excitation and the frequency resonance equation in the case of resonance are given .
给出了其在硬激励和软激励情况下的一阶近似解和共振情况下的频率响应方程。
Design of NMR soft pulse excitation unit
通用的NMR软脉冲单元研制
soft excitation