男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
US EUROPE AFRICA ASIA 中文
Business / View

China leads in many high-speed rail aspects

By Zhai Wanming (China Daily) Updated: 2015-04-27 07:38

China leads in many high-speed rail aspects

A CRH train that runs on Lanzhou-Urumqi High-Speed Railway stops at Urumqi South Railway Station in Urumqi, Xinjiang Uygur autonomous region, Dec 26, 2014. [Photo/Xinhua]

Media reports suggest Japanese Prime Minister Shinzo Abe will try to promote Shinkansen bullet train technology during his visit to the United States (which started on April 26) to cash in on the US' plans to prop up its economy with high-speed railway.

Obviously, Japan is competing with China to get a share of the high-speed train market in US and some other countries. So which country has the upper hand?

China may be a latecomer in high-speed train construction, but some of its technologies are better than other countries'. For example, one exquisite technological requirement is that the surface of the rails that touches the wheels must be delicately clean while the track geometry should be smooth, because even the minutest flaw could shake a train considering its high speed. This is just one of the areas in which China excels - the rails on the Beijing-Shanghai high-speed train line are so smooth that the test train reached speeds of 380 kilometers an hour without any evident shaking.

On another technological index - degree of ride comfort - China's high-speed trains' record is good, too. Every train has to pass strict even severe tests before being pressed into service to ensure passengers enjoy the maximum comfort. Many passengers who have traveled by high-speed trains in China and Europe say the former are better. On other indexes such as dynamic safety, too, China's high-speed railways show good performance.

Besides, China's high-speed railways cost the least in the world. It is globally acknowledged that, the cost of building high-speed railways is the lowest in China. In October 2014, while bidding for the Boston subway program, China CNR Corporation Limited, despite not bagging the contract, quoted a price that was only about 60 percent that of its Japanese competitor Kawasaki Heavy Industries.

The incident prompted Japanese enterprises to accuse China of "dumping", albeit without any basis. China's high-speed railways cost less because of the low cost of labor in the country. High-speed railways require civil and electrical engineering, and all kinds of physical labor, which cost much more in a fast aging society like Japan. And therein lies China's advantage.

China leads in many high-speed rail aspects

Also, the low cost of China's high-speed railways has a lot to do with the lower requirement of profit.

Another incomparable advantage Chinese high-speed railways have is the country's difficult geographical terrains. China has already built more than 16,000 km of high-speed railways across high plateaus, mountains, plains and deserts. Working in such terrains, Chinese engineers and workers have gained precious experience to deal with difficulties of any kind. Working together, engineers and other technical experts, and manual workers have developed a strong teamwork spirit and mutual trust.

Of course, the Japanese too have their advantages. Masaki Ogata, executive vice-chairman of East Japan Railway Company, said in a recent interview, Shinkansen technology can prevent damage to high-speed railways during earthquakes, and has advantages in environmental protection and noise control.

Indeed, Japanese high-speed railways enjoy these advantages. But China is developing its high-speed train technology fast enough to catch up with the best by, among other things, funding research teams to develop advanced monitoring and early warning systems, and quake-resistant technology to ensure the safety of high-speed railways. Even in environmental protection, China has gained enough experience while building the railway that connects Lhasa, Tibet with Qinghai province.

In short, China's high-speed railways are good in quality and competitive in price, and will definitely be better in the future.

Zhai Wanming is a chair professor at Xinan Jiaotong University and a member of the Chinese Academy of Sciences. The article is an excerpt from his interview with China Daily's Zhang Zhouxiang.

...
主站蜘蛛池模板: 泰来县| 金寨县| 南京市| 岳阳市| 会东县| 获嘉县| 鄂托克旗| 麦盖提县| 和平县| 崇礼县| 鹰潭市| 和顺县| 长宁县| 塔河县| 浦城县| 汝南县| 香港 | 鄯善县| 昌邑市| 德保县| 贵德县| 苗栗县| 准格尔旗| 乐亭县| 高阳县| 麻阳| 修水县| 阳朔县| 托里县| 平邑县| 高雄市| 剑阁县| 沐川县| 城口县| 元谋县| 齐河县| 弥渡县| 原阳县| 南昌市| 阿拉善盟| 静宁县| 德保县| 启东市| 历史| 逊克县| 胶南市| 合作市| 新沂市| 五寨县| 柘城县| 宿松县| 原阳县| 永康市| 奉化市| 东乌珠穆沁旗| 郓城县| 和平区| 澄城县| 潮州市| 宜都市| 泾川县| 安仁县| 昔阳县| 灵川县| 定边县| 汉寿县| 浦东新区| 祁门县| 遵义市| 台东县| 丰宁| 连平县| 新兴县| 屏南县| 页游| 梁河县| 黄梅县| 务川| 江都市| 桂阳县| 宝丰县| 北流市|