日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

Chinese scientists call for construction of world's first underwater vacuum tube train

People's Daily Online | Updated: 2017-04-26 10:32

China is now capable of building the world's first underwater vacuum tube train, a futuristic form of transportation that can achieve supersonic speed and reduce airborne noise, according to Chinese academics and scholars.

"In order to build an underwater vacuum tunnel, China must bring forth new ideas...about submerged floating tunnels, maglev trains and vacuum techniques. Currently, the country's technologies are sufficient to carry out such a program," Sun Jun, an academician with the Chinese Academy of Sciences, told the Science and Technology Daily.

The vacuum tube train is a magnetic levitation line that utilizes evacuated tubes or tunnels. Due to reduced air resistance, the train could hit a theoretical speed of 2,000 kilometers per hour using relatively little power, and its operation would not be affected by weather.

The China Railway Tunnel Survey & Design Institute has finished a tentative research survey on the possibility of building a 10-kilometer underwater vacuum tunnel in Zhoushan, Zhejiang province. Once built, it would become China's longest underwater tunnel, as well as the world's first underwater vacuum tunnel, cutting the travel time between Fujian and Taipei - located 180 kilometers apart - to just 13 minutes.

The program has been welcomed by many scholars and experts, who note that China has built over 500 underwater tunnels over the past 20 years, gaining rich experience and refined technologies. Sun, along with two other academicians, has called for Chinese authorities to approve and support the program.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 奇米影视第七色 | 久久亚洲第一 | 国产99久久精品一区二区 | 国产精品入口免费麻豆 | 免费看污又色又爽又黄视频 | 欧美激情第二页 | 精品视频一区二区三区在线观看 | 日韩视| 国产精品美女久久久久久 | 欧美精品二区 | 狠狠的撸2015最新版狠狠的撸2015最新版 | 久久久人成影片免费观看 | 99国产欧美久久精品 | 欧美成人区 | 亚洲国产精品久久久久网站 | 日韩欧美亚洲综合久久99e | 久久国产精品免费网站 | 青娱乐九色 | 日色视频 | 日本午夜在线 | xxx视频| 久久国产a | 欧美日韩在线免费观看 | 1级a的观看视频 | 久久精品国产免费看久久精品 | 日本黄色大片免费看 | 久久综合图区亚洲综合图区 | 午夜精品久久久久久 | 久草在线视频资源 | 在线观看国产情趣免费视频 | 久草在线影 | 欧美午夜视频 | 亚洲欧美日韩综合一区久久 | 亚洲视频在线网站 | 欧洲一级鲁丝片免费 | 我要看欧美一级毛片 | 亚洲一级毛片免费看 | 99毛片| 久久精品1 | 毛片啪啪 | 草综合|