Question

介绍磁悬浮列车的英语作文

Answer 1

Not a bird or a plane , just the world’s fastest train-shanghai’s maglev Shanghai Magnetic Levitation Train Projiet is a hige-speed railway combining the traffic, sightseeing and touring.the word “Maglev” is short for “megnetic levitalion”.
The main line is 30 km （long） ,starting from Baiyang Road ,South Longyang Road ,along Line No.2 of the subway ,and ending at the Pudong Internation Airport .the train has no wings ,but no wheels （or） engines ,either.magnets are just the attraction .powerful magnets lift the train about 10 millimeters （above）the special track. Maglev trains can travel at a speed of up （to） 430 klilometers per hour ,and it will take about eight minutes to travel between the downtown area to the airport by the maglev train .each train can （carry） 959 passengers and 12 departures every hour form the pudong international airport .it’s the world’s fastest,modernest passenger line.
译文：这不是鸟，也不是飞机，而是世界上速度最快的列车——上海的磁悬浮列车！
上海磁悬浮列车项目是一条囊括交通运输、观光和旅游于一身的高速列车。单词“Maglev”是词组“megnetic levitation”的所写。
主线长30公里，起始于柏扬路龙阳南路，与轨道交通2号线相接，止于浦东国际机场。列车没有翅膀，也没有轮胎或引擎。磁悬浮靠的是吸引。强大的磁力将列车车身从特殊的轨道上抬高10毫米。磁悬浮列车能以最高430公里每小时的速度行驶。往返市中心和机场仅需大约8分钟。每辆列车可以搭在959名乘客，每小时从浦东国际机场驶出12列列车。它是世界上最快，最先进的载客线路。

Answer 2

Amaglev train floats about 10mm above the guideway on a magnetic field （磁场）. It is propelled （推进） by the guideway itself rather than an onboard （机载的）engine by changing magnetic fields. Once the train is pulled into the next section the magnetism（磁性） switches2 so that the train is pulled on again. The Electro-magnets（电磁体） run the length of the guideway.

　　The primary（主要的）advantage is maintenance3. Because the train floats along there is no contact with the ground and therefore no need for any moving parts. As a result there are no components4 that would wear out. This means in theory trains and track would need no maintenance at all.The second advantage is that because maglev trains float, there is no friction（摩擦力）. Note that there will still be air resistance（空气阻力）. A third advantage is less noise, because there are no wheels running along there is no wheel noise. However noise due to air disturbance （拢乱）still occurs5. The final advantage is speed, as a result of the three previous listed it is more viable6 for maglev trains to travel extremely fast, ie 500km/h.

　　 Maglev guide paths are bound to（一定的） be more costly than conventional（常规的）steel railways.The other main disadvantage is lack with existing infrastructure（基础设施）. The fact that a maglev train will not be able to continue beyond its track may seriously hinder7 its usefulness.

　　注释：

　　1．maglev n．磁力悬浮火车

　　2．switch vi．改变，转变

　　3．maintenance n．维修，养护

　　4．component n．(尤指机动车的)零件，部件

　　5．occur vi 存在，出现

　　6．viable adj.切实可行的，可实施的

　　7．hinder vt.阻碍，妨碍