Of tugboat news.

關(guān)于拖船的新聞三级国产精品。

First, this thesis has a look back at the theoretical and practical outcomes in terms of researches on fleet planning. On the basis of this, the author will put forward researching object of the thesis, that is, the Shanghai Port tugboat fleet in the period of rapidly expansion.

本文首先回顧國內(nèi)外在船隊(duì)規(guī)劃方面的理論和研究成果欧美性爱高超网站，在對(duì)此總結(jié)分析的基礎(chǔ)上提出本文的研究對(duì)象黑人大战白妞系列AV，即處于規(guī)模擴(kuò)張時(shí)期的上海港港作拖輪船隊(duì)。

There's an oil tanker and a tugboat over there, a ferry over there, and a cruise ship docked at the pier.

那里有一艘油輪和一艘拖輪欧美三级一级视频，那里有一艘渡輪国产性色Aⅴ综合一，還有一艘游輪停在碼頭最新日韩AV.COM。

As the main force of the port-based workboat, Tugboat fleet has played a critical role in the operation of the port. The fleet scale must meet the need of development of the port; otherwise, the port throughput capacity will be endangered and the port competitiveness and the social-economic benefits will consequently be influenced.

而港作拖輪船隊(duì)作為港口輔助作業(yè)船舶的主力軍，在港口生產(chǎn)中起著相當(dāng)重要的作用亚洲欧美性爱视频免费观看，其船隊(duì)規(guī)模必須符合港口發(fā)展的要求午夜三级理论福利电影，否則勢必成為港口通過能力的瓶頸，直接影響到港口的競爭力和社會(huì)經(jīng)濟(jì)效益啊啊啊日韩黄色视频。