In this paper coherence chart method is popularized to typical multispin weakly coupling systems such as AMX, AX_2 and AX_3.Applied examples for DEPT experiment, homonu-clear and hetronuclear relay coherence experiment are given.

• 本文将此方法推广至AMX、AX_2和AX_3等典型多自旋弱耦合系统；并以DEPT实验及同核和异核Relay相干实验为例作了说明.