土木工程畢業(yè)設計外文翻譯--公路工程-建筑結(jié)構(gòu)-資料下載頁
2025-05-12 13:52本頁面
【導讀】泥土、磚塊和松柏木材建造而成的。由于只是為馬匹、且很窄，根本就容納不下汽車的通行。私立收費公路開始涌現(xiàn)出來。截止到1921年，美國有了。共計萬公里的公路。他們中的很多都是采用19世。紀蘇格蘭工程師托馬斯?特爾福德和約翰?標準強調(diào)了充分排水的重要性。關于大小尺寸、重量限制以及商業(yè)標識的國家標準。當艾森豪威爾將軍——在德國服役于美國陸軍。設全國范圍的高速公路體系。第二次世界大戰(zhàn)期間，對。貨車和新道路數(shù)量的需求大幅度上升。對于防御系統(tǒng)工作的重要性。以上的產(chǎn)品都由機動車來運送。戰(zhàn)爭同樣也暴露了這樣。令人混淆的設計標準。一些州允許卡車載重量高達36000磅，但另一些卻限制載重不可以超過7,000磅。為了修建長達44000公。有針對性的特殊工程設計方案和問題解決方針。來，并且永遠地改變了美國的面貌。要城市，并且把美國與加拿大和墨西哥連接了起來。計的彎轉(zhuǎn)，以及限制出入的通道。高速公路上的事故死。為數(shù)以百萬計的機動車輛提供了便利。
【正文】 es, curves engineered for safe turns, and limited access. The death rate on highways is half that of all other . roads ( deaths per 100 million passenger miles pared to deaths per 100 million on all other roads). By opening the North American continent, highways have enabled consumer goods and services to reach people in remote and rural areas of the country, spurred the growth of suburbs, and provided people with greater options in terms of jobs, access to cultural programs, health care, and other 15 benefits. Above all, the interstate system provides individuals with what they enrich most: personal freedom of mobility. The interstate system has been an essential element of the nation39。s economic growth in terms of shipping and job creation: more than 75 percent of the nation39。s freight deliveries arrive by truck. And most products that arrive by rail or air use interstates for the last leg of the journey by vehicle. Not only has the highway system affected the American economy by providing shipping routes, it has led to the growth of spinoff industries like service stations, motels, restaurants, and shopping centres. It has allowed the relocation of 16 manufacturing plants and other industries from urban areas to rural. By the end of the century there was an immense work of paved roads, residential streets, expressways, and freeways built to support millions of vehicles, the high way system was officially renamed for Eisenhower to honor his vision and leadership. The year construction began he said: “Together, the united forces of our munic ation and transportation systems are dynamic elements in the very name we bear United States. Without them, we would be a mere alliance of many separate parts.”
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