So the research on fleet planning needs to be further improved.
因此，船队规划的研究工作需要进一步改进和完善。
A ship routing and fleet planning decision making system is also developed with the mixed programming of VB and Fortran.
基于计算机语言混合编程的方法，设计并开发了航线配船与船队规划决策系统。
The thesis analyzes the actual data of some airlines on the basis of deducing cost index in order to improve the cost of fleet planning.
用飞机成本指数的推导，通过航空公司的实际数据来研究成本指数对航空公司在成本控制上的应用。
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