造船专业英语
2003-3
哈尔滨工程大学出版社
张宝华
312
260000
本书为英文本船舶概论，全面、系统地介绍了签订造船合同、适航性、船体结构、船体建造工艺、船舶动力-推进系统、……乃至试航及质检等内容，是船厂及船舶行业工人、技术人员、管理人员必读的英语教材。
Lesson 1 An Introduction of H D Shipyard(1)Lesson 2 An Introduction of H D Shipyard(2)Lesson 3 Shipbuilding Contract(1)Lesson 4 Shipbuilding Contract(2)Lesson 5 Principal DimensionsLesson 6 Other Seakee, ;ng Performances(1)Lesson 7 Other Seakeeping Performances(2)Lesson 8 Hull Construction(1)Lesson 9 Hull C-onstruction(2)Lesson 10 Ship EquipmentLesson 11 Workmanship for Hull Building(1)Lesson 12 Workmanship for Hull Building(2)Lesson 13 WeldingLesson 14 Marine Diesel Engines(1)Lesson 15 Marine Diesel Engines(2)Lesson 16 Marine Diesel Engines(3)Lesson 17 The Propulsion PlantLesson 18 The Shaft System Lesson 19 The Power Systems of Diesel EnginesLesson 20 Ship Systems(1)Lesson 21 Ship Systems(2)Lesson 22 The Power SystemLesson 23 The Application of Electriity on BoardLesson 24 Intercommunication and Electrical SignalsLesson 25 Three Stages of Main Engine ControlLesson 26 Power Station AutomationLesson 27 Navigation Equipment(1)Lesson 28 Navigation Equipment(2)Lesson 29 Radio Communication EquipmentLesson 30 PaintingLesson 31 Sea TrialLesson 32 Quality ManagementLesson 33 The Application of ComputersVocabulary参考译文
In the previous several passages, a study of the power engineering was thoroughly made. From now on, a concise introduction concerning the light current engineering will be presented to you, which deals with the equipment for navigation, communication, observation and detection. Indeed, the above equipment can well boast itself to be the ears and eyes of a ship. In the first place, we will come to the navigation equipment. 1. Compass The compass is the chief instrument on board to indicate the course of a ship, which may be subdivided into magnetic compass and electrical compass in the light of their different working principles. The magnetic compass is a sort of directional instruments, the long history of which might date back to the ancient Chinese and the principle of which is that a magnetic needle will always point to the North Pole due to the influence of the earth magnetic field. In spite of the fact that a lot more navigation equipment of high accuracy has been invented, the magnetic compass could not be spared yet by reason of its simplicity of construction, reliability of performance, convenience of application and independence of power supply. Just as everything in the world has two sides, however, the magnetic compass cannot avoid certain weak-points of its own, that is, the accuracy of the magnetic compass is not as ideal as people might expect, since its pointing of direction will be affected both by the external magnetic field Which has been slowly varying with the passage of time and by the magnetic objects around it.
