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提出在流量随时间变化较大的航线上，基于平均运量的概念优化船型是不妥当的，而应考虑每航次可能得到的装载量及由此计算的船舶平均装载率和营运经济性等指标．这样能使优化论证结果更加符合客观实际．文中以一条客货运输航线为例．做了船型优选示范．
It is suggested that the conceptual optimization of a ship based on the average traffic volume is not appropriate on the route with large variation of traffic over time, and the possible loadings per cruise and the average loading rate and operation economy of the ship calculated therefrom should be taken into account . This will make the optimization argument more in line with objective reality. The article takes a passenger and cargo shipping route as an example. Made a model preferred demonstration.