| 1. | After undocking the astronauts will fly around the station one final time before returning to earth wednesday morning 出坞后,宇航员将最后一次绕空间站飞行,然后于周三早上返回地球。 |
| 2. | Discovery undocked from the orbiting scientific outpost after re - stocking the space station , repairing its equipment and haul away trash 在为空间站完成补给、为其修理装备和搬运废弃物之后, “发现号”从精确的轨道基地出坞。 |
| 3. | Fourthly , this dissertation studies the optimization of the tug configuration based on the genetic algorithms ( ga ) during the ship undocking process 四、利用遗传算法,重点对船舶出坞拖轮的配置优化问题进行了研究和实践。 |
| 4. | The research results are applied in the undocking of the 175000 dwt bulk carrier and the " panyu " fpso in shanghai waigaoqiao shipbuilding co . ltd . 该研究结果已在上海外高桥造船有限公司17 . 5万吨散货船和“番禺号” fpso出坞中得到应用。 |
| 5. | The above study reduces the blindness of ship undocking and provides the theoretical foundation and practical guidance for the ship undocking operation 这些研究减少了船舶出坞过程中的盲目性,为船舶出坞提供了一定的理论基础和实践指导。 |
| 6. | Fifthly , extensive study and testing are carried out regarding the ship undocking process simulation forecasting on some typical ship types , e . g . 175000 dwt bulk carrier and 300000 dwt oil tanker 五、结合17 . 5万吨好望角型散货船及30万吨油轮等有代表性的船型,对船舶出坞过程仿真预报进行了广泛而有重点的研究和实践。 |
| 7. | Ship undocking are the necessary processes in ship repairing or shipbuilding . now the traditional empirical method is used in ship undocking at both home and abroad . the ship undocking plan and the configuration of tugs are decided after the ship undocking environmental loads are estimated 船舶进出坞是船坞修造船过程中必不可少的工艺环节,目前国内外对待船舶进出坞问题仍然采用传统的经验方法,通过对船舶出坞时环境载荷估算,来确定船舶进出坞方法和船舶出坞时拖轮的使用和配备。 |
| 8. | The simulation of ship undocking is realized by establishing the ship undocking mathematical model , finding the numerical solution of the differential equation and establishing the calculation model and solution method regarding the towing forces in the undocking process . simulation forecasting is conducted regarding three typical ship types 在建立船舶出坞过程的数学模型和求解微分方程的数值解法,以及船舶出坞时拖轮力的计武汉理工大学博士学位论文算模型和求解方法等基础上,建立了船舶出坞过程的仿真预报系统,并分别对有代表性的三种船舶进行了仿真预报。 |
| 9. | Thirdly , the basic configuration plan of a ship undocking assisted by different number of tugs is given . the relationships among the gyroidal moment , gyroidal time and drag forces of tugs in the process of ship undocking are analyzed . the margin of the tugs " towing forces during the ship undocking and turning process is studied 三、制定了不同数量拖轮协助船舶出坞时的基本布置形式,给出了不同拖轮协助船舶出坞时的拖轮布置示意图,并试验分析了船舶出坞回转力矩与回转时间和拖轮拖力之间关系,并确定了用于船舶出坞回转的拖轮拖力的余度大小。 |
| 10. | Firstly , the mathematical models on a large ship undocking numerical simulation forecasting are studied and tested systematically . the ship hydrodynamic forces , the wind , wave and current forces , the shallow water effect and the wall effect are studied in detail . the mathematical model for solving the problem is established 一、论文对大型船舶出坞过程仿真预报数学模型进行了系统的研究与实践,对涉及船舶出坞过程中船舶水动力、船舶受到的风、浪、流各种环境力、浅水效应和壁岸效应等各种力都进行了深入的分析,采用了ocimf介绍的数学模型,求解环境载荷。 |