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Anita van der Laan 《中国远洋航务公告》2006,(5)
Untiljustafewyearsago,portsinEuropehadaratherwishy-washyimage.Intheeyesofboththepublicandpoliticians,portswereanecessaryfactoflife.TheupsurgeoftheChineseeconomyandglobalisationingeneralhavechangedthis.Peoplehaveagainbecomeawarethatportsarethelifebloodoftheworldeconomy.InmanycountriesofWesternEurope,theyareagainrealisingthatawell-functioningportisastimulusfortheeconomy.IntheNetherlands,thepositiverevaluationevenledtoStateparticipationinthePortofRotterdamAuthority.Thishasbeenapubliclimitedl… 相似文献
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0 INTRODUCTIONWeknowthatthemetalmaterialwillbegincreepwhenthetemperatureishigherthan 30 per centoftheirsmeltingpoint.Foraturbine,adieselengine,anaerospacestructureandothermotivepowermechanisms,thematerialsstillworkwhentheirtemperaturesovershootthecreepthresholdval ue.Thecreepdeformationwilloccuratnormaltem peratureforthepolymerstructures(e.g .plasticspipingelements) .Inthecaseofcreepingthefrac tureofthestructureoccursduetocreepfractureandcreepcrackgrowth.Thereforetheresearchonthecrackgro… 相似文献
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Deerberg Systems Owner & CEO 《机电设备》2006,23(1):22-23
亲爱的读者
1979年克劳斯.布兰卡姆珀(Dr.Ing.Klaus Brankamp)教授,当时顾问委员会主席给了我一个咨询指令.在那时DeutscheGeratebau由焦西姆.詹(Joachim Zahn)教授,Mercedes主席,和Pavcl领事,Rheinnadel.集团的业主所拥有.指令要求对5个部门和营销中心进行分析. 相似文献
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张彤 《中国远洋航务公告》1999,(11)
10月11日,由鹿特丹新任市长I.W.Opstelten率领的代表团访问了中国远洋运输(集团)总公司,陪同前来的有荷兰驻华大使Monique Muller女士、Li Liqun女士、鹿特丹市政府官员H.J.A.van de Braak、W.J.M.vaN_Oostcrhout、鹿特丹港货运公司总经理T.A.Jansen、货运公司主管F.Torfs、港口使费部主管C.G.Sehoutsen、跨洋公司总经理J.Mannie、曹延路、以及鹿特丹港码头公司A.J.Kleijn等一行13人。中远集团副总裁高伟杰、发展部副总经理钟鸣、研究中心主任吴子恒、运输部商务处处长王诚等会见了客人。 I.w.Opstelten市长认为,鹿特丹 相似文献
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《中国远洋航务公告》2000,(11)
In April of 1979, the COSCO vessel Liulinhai, the first Chinese ship with P.R.C. flag arrived in Seattle, marking a new chapter in the shipping and trade relations between China and U.S.A. The Port of Seattle, where the first shipment of American wheat to the People's Republic of China was loaded onto Liulinhai 21 years ago, is still playing an important role in Sino-US trade now. Its annual value of trade between China and U.S.A reached 6 billion USD. Recently, invited by Port of Qingdao, a delegation 相似文献
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"黄帝画野,始分都邑;大禹治水,初奠山川.珠流南国,得天独厚.沃水千里,源自马雄.古隶沾益,今属曲靖.地当黔蜀之冲,山接乌蒙之险.三冬无冰雪,四季尽葱茏.滴流分三江,一脉隔双盘.主峙巍峨,老高峙立.溪流涌泉,若暗若明.汇涓蛰流,出洞成河.水流汩汩,终年不绝.是乃珠江正源,海拔2100米.穿牛鼻,过花山,南盘九曲,清流澈湍.红水干嶂,夹岸崇深.飞泻黔浔,直下西江.汇北盘于蔗香;合融柳于石龙;迎邕郁于桂平;接漓桂于梧州;乃越三榕,出羚羊,更会北东二江,锦积三角河网,八方分流,竟入南洋……聚九州之英花,集五岭之灵秀.气候温和,风光奇美,河水充盈,物产丰饶,士工昌盛,旅贸繁荣,江水亘流,世民泽波." 相似文献
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B.H.型气泡滑行艇阻力模型试验研究 总被引:2,自引:0,他引:2
通过艇底开槽的B.H.型气泡滑行艇(简称为B.H.艇)气层减阻的模型试验,初步研究了不同因素(气流量、艇速、开槽方式等)对B.H.艇的气层减阻规律及运动姿态的影响,并对艇底流态进行了较全面的观测.结果表明:当空腔在艇底的投影面积相同时,不同开槽方式对喷气减阻效果的影响不大;航速与气流量均是影响B.H.艇气层减阻效果的重要因素,在饱和气流量下B.H.艇的相对减阻率可达50%以上,绝对减阻率可达15%以上.开槽使得不喷气时的阻力增加较大,但空腔对保持气层的稳定性是相当有利的. 相似文献
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ZENGZhao-long TIANKai LIWen-xiu 《船舶与海洋工程学报》2004,3(2):58-62
Ship-bome special crane, a multi-joints and foldaway one, is important to study the most effective energy-saving ( i. e. synthetic time-fuel optimal) operation control mode. In this paper, by introducing weighted parameters, a time-fuel synthetic optimal criterion is obtained, and configuration of the optimal controller is verified. Furthermore, a predictive average dynamic method is put forward, and applied to treat nonlinearity and coupling of the crane. Finally, an optimal controller with feedback is designed. The validity of this approach is verified by simulation results. 相似文献