A.川牛膝偏清上部火热，怀牛膝偏清下部湿热
B.川牛膝偏补肝肾，怀牛膝偏祛风湿
C.川牛膝偏活血通经，怀牛膝偏利尿通淋
D.川牛膝偏强腰膝，怀牛膝偏活血通经
E.川牛膝活血通经力强，怀牛膝长于补肝肾、强筋骨