对结合脉冲梯度场的选择激发技术在溶剂峰抑制中的四种可行序列进行比较，实验表明非对称的双梯度自旋回波序列在谱图的相位特性和溶剂峰抑制效果两方面均是最佳的方案，并将其推广应用到溶剂峰抑制的ｇＣＯＳＹ 实验中，获得较理想的溶剂峰抑制效果 The comparison of the four feasible sequences in the solvent peak suppression with the selective excitation technique based on the pulsed gradient field shows that the asymmetric two-gradient spin echo sequence is the best in both phase characteristics and solvent peak suppression The scheme was applied to the gCOSY experiment of solvent peak inhibition to obtain a better solvent peak suppression effect