... harbor tug 港作拖船大型港作拖船港作拖轮 harbor tug 港作拖轮 harbor utility craft 港务工作艇 ...
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The core of the thesis is to establish a mathematical modal in order to make researches on the strategy of the tugboat fleet development year by year.
本文核心内容是建立数学模型来研究上海港港作拖轮船队逐年发展策略问题。
参考来源 - 上海港港作拖轮船队发展规划研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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