13f
13f
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More specifically , dig through their 13F filings .
尤其是要仔细研究他们的13F表格。
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Our experience in fulfilling the requirements of MARPOL 73 / 78 Appendix I 13F in designing the medium and small size double hull tankers
中小型双壳体油船设计中对MARPOL73/78附则I13F条款应用之体会
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The paper discusses the influence of MARPOL 13F and 25A on the overall layout of Panamax tanker , compares the advantages and defects of several subdivision schemes and proposes a number of effective improving countermeasures that fit to new MARPOL requirement .
本文讨论了MARPOL13F和25A对巴拿马型油船总体方案的影响,对比分析了一些总体分舱方案的优缺点,提出了针对MARPOL新规则的一些有效的改善措施。