Establishing freightturnover actual-fitted model, and analyze its fitting efficiency.
利用历史数据建立货运周转量拟合模型，分析比较其拟合效果。
2
With the increase in freightturnover there will be a larger number of ships that will need icebreaker assistance.
随着货运量交易的上升，将会有很多船只需要破冰船的帮助。
3
The results shows that the change of industry structure has nothing to do with the structure of freight quantity, but has causal relationship with the structure of freightturnover quantity.