Sewage Treatment(18.污水处理)

    As soon as early peoples established settlementthey had the problem of getting rid of sewage——their organic wastes and,sometimes,those of domestic animals. Nature disposes of surplus organicmaterial in four principal ways by dilution,oxidation,putrefaction,and filtration. Ear......查看详细>>

标签:建筑施工英语

Water Supply(17.供水工程)

    The more prosperous man becomes,the more waterhe uses. In 1980s in developing countries(the ThirdWorld),some communities manage with an averageof 2.5 gallons (12 liters ) of water per person perday. In most European cities the daily domesticconsumption per capita of the populatio......查看详细>>

标签:建筑施工英语

Building Dams(16.修筑大坝)

    Control of his life-sustaining water supply has always been one of man’s primary concerns. For5,000 years,dams have been instrumental in thiscontrol,being used to avert floods,divert rivers,store water,and irrigate land. Many of today’s constructions fulfill these same age-ol......查看详细>>

标签:建筑施工英语

Canal Construction(15.运河建设)

    Modern canal provide important transport highways throughout Europe and,to a lesser extent,North America. The rivers Rhine and Moselle feed an dxtensive canal system in Germany that hasconnections to the Dutch,Belgian,and French networks. A new major waterway is completed to co......查看详细>>

标签:建筑施工英语

Port Construction(14.港口建设)

    A harbor is any place that provides seagoing shipsor boats of any kind with a measure of protectionfrom the wind and waves. To fulfill this role,a harbor must be deep enough to accommodate thelargest ships that may use it,and have a bottomthat will hold them at anchor. A port is ......查看详细>>

标签:建筑施工英语

Railroads of the Future(13.未来铁路)

    The railroads of the near future will probably notinvolve any spectacularly new principle but will bedevelopments of those we use today. The rail administrations have built their entire system to astereotyped model,with two steel rails of a particular type separated by a “gauge......查看详细>>

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Railroad Transportation(12.铁路运输)

    Man built railroads long before he built steam engines and before he had even mastered the basictechnology of engineering with iron and other metals. The earliest trains were constructed of timberand were in operation not later than the fourteenthcentury. They were built to overc......查看详细>>

标签:建筑施工英语

Airport Construction(11.机场建设)

    When Orville wright (1871—1948) and his brotherWilbur (1867—1912) made mans first poweredflight on December 17,1903,at kitty Hawk,North Carolina,they revolutionized transportation. In theory the new aircraft made possible themovement of men and goods from any point onearth t......查看详细>>

标签:建筑施工英语

Modern Bridges(10.现代桥梁)

    Two nineteenth-century inventions led to a revolution in bridge building. These were Partland cement and mass-produced steel. Cement is the vitalingredient of concrete,and mass concrete can beused to build piers,abutments (bank supports),and arches of “artificial” stone to an......查看详细>>

标签:建筑施工英语

History of Bridges(9.筑桥历史)

    The earliest bridges were probably logs thrownacross streams or the stone slab clapper bridgessuch as those still surviving in Devon,England.Another type of water crossing was provided bybridges formed by boats fixed together. The Greekhistorian Herodotus (485 —425 BC) provided......查看详细>>

标签:建筑施工英语

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