以下为句子列表：
英文: According to the Dalian-old iron mountain canal situation, considered changes the drinking water the transport node, by captain, the beam, the drinking water and the speed carries on the body form plan as the variable the combination.
中文: 摘要根据大连湾－老铁山水道的情况，考虑变吃水的运输方式，以船长、船宽、吃水及航速作为变量来进行船型方案的组合。
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英文: Selects only is presently worth, internal returns ratio, the investment recoupment period, the essential freight rate and the synthesis economic indicator took the weight body form plan the standard, obtains the best body form plan through the analysis co
中文: 选用净现值、内部收益率、投资回收期、必要运费率和综合经济指标作为衡量船型方案的标准，通过分析计算得出最佳的船型方案。
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