日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

Society

Ambitious plan overcame debate and difficulties

By Tan Zongyang (China Daily)
Updated: 2011-06-14 08:20
Large Medium Small

BEIJING - The world's longest high-speed rail line finally overcomes timeframe and technology disputes to arrive a year ahead of schedule.

Why is the high-speed line needed?

China constructed its first railway link between Beijing and Shanghai in 1968 with the completion of the Nanjing Yangtze River Bridge.

Related readings:
Ambitious plan overcame debate and difficulties High-speed rail link set for launch 
Ambitious plan overcame debate and difficulties Trial prices for Beijing-Shanghai bullet trains set
Ambitious plan overcame debate and difficulties Beijing-Shanghai railway gets nod from engineers
Ambitious plan overcame debate and difficulties China not slowing high-speed rail construction

The line soon became one of the country's busiest routes. Although its length was only 2 percent of the nation's total railway network, it transported more than 10 percent of the country's passengers and 7 percent of its freight, four times the national average.

In the early 1990s, a proposal was put forward by railway officials to build a new faster track to transport the ever-increasing number of passengers and leave more room for cargo transportation on the existing line.

This proposal was the germ of the idea for the Beijing-Shanghai high-speed railway.

When should the tracks be built?

After soliciting suggestions from experts, China's railway authority filed an assumption report at the end of 1990 to map out a new fast track between Beijing and Shanghai. The plan, ambitious at the time, stirred public controversy over its huge cost and technical complexity.

There was also a debate about when the line should be constructed. The debate lasted for several years until the government eventually made the decision in 1997 that a new line should be built and "the earlier the better".

However, a new debate then arose over what technology the new line would use.

Which technology is the best choice?

Engineers disagreed over which track technology would be used for the new line.

Supporters of maglev technology believed China had already mastered the core technology and it was the right time to use it to propel China's railway system forward.

However, the majority of experts voted for a high-speed railway based on traditional wheel track, on the grounds it would be able to link with China's existing railway network.

A high-speed rail line was eventually chosen as experts from the Ministry of Railways agreed that trains without wheels were "unrealistic" over a long distance.

At the beginning of 2006, the State Council approved the plan for a high-speed railway between the two metropolises, and construction began two years later.

Although it took 18 years for the fast track to develop from a simple idea to reality, its completion came one year earlier than expected and the high-speed rail link between the two cities will open for service later this month.

主站蜘蛛池模板: 日韩欧美中文字幕一区二区三区 | www.日韩高清 | 午夜精品久久久久久久蜜桃 | av老女人| 黄色福利视频 | 亚洲天堂国产精品 | 色综合天天综合 | 天天天操操操 | 国产极品少妇 | 亚洲一区二区av在线 | 一级片在线 | 波多野结衣日韩 | 在线观看国产成人 | 日韩毛片在线免费观看 | 日本黄网站色大片免费观看 | 日本不卡一区二区 | 91高清在线 | 国产午夜精品久久久久 | 欧美 日韩 国产 在线观看 | 久久久精品一区二区 | 国产精品免费一区 | 99综合网| 欧美日韩在线观看视频 | 色视频一区 | 精品欧美久久 | 亚洲三页 | 国产特级毛片 | 视频一区欧美 | 精品尤物| 黄色成年人网站 | 超碰婷婷| 天天舔天天操天天干 | 日韩欧美国产中文字幕 | 中文字幕在线免费观看视频 | 99国内精品 | 亚洲天堂777| www国产视频 | 伊人网视频在线观看 | 亚洲在线中文字幕 | 自拍偷拍另类 | 99精品视频在线播放免费 |