For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出了内消旋体消旋原因传统不理。利用螺旋理论和稳定交叉式构象，理地了内消旋体消旋原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指消旋体消旋原因传统解释的不理性。利用螺旋理论和稳定的交叉式构象，理地解释消旋体消旋的原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出了内消旋体消旋原因传统解释理性。利用螺旋理论和稳定交叉式构象，理地解释了内消旋体消旋原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出了内原因传统解释的不性。利用螺稳定的交叉式构象，地解释了内的原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出了内消旋体消旋原因传统不理。利用螺旋理论和稳定交叉式构象，理地了内消旋体消旋原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出了体原因传统解释的不理性。利用螺理论和稳定的交叉式构象，理地解释了体的原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出消旋体消旋原因传统解不理性。利用螺旋理论和稳定式构象，理地解消旋体消旋原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出了内原因传统解释的不理性。利用螺理论和稳定的交叉式构象，理地解释了内的原因。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.

指出了内消旋体消旋原因传统解释的不理性。利用螺旋理论和稳定的交叉式构象，理地解释了内消旋体消旋的原因。