以下为句子列表：
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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