Two hypothesizes are put forward to, one is because that the industrial structure changed lowly, the other is the contribution of the three industrial structure change to the economic growth changing too acutely, which declined the influence.

• 文中提出了两个解释假说,一是这段时期东北的产业结构变动十分缓慢,不足以影响经济增长; 二是三次产业对经济增长的贡献率波动太大,此消彼长,削弱了其对经济增长的影响。