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

Global EditionASIA 中文雙語Fran?ais
Business
Home / Business / Technology

Nation's self-developed technology helps HSR

China Daily | Updated: 2025-12-22 09:39
Share
Share - WeChat
A high-speed train runs on the Changbai Mountain section of the Shenyang-Baihe high-speed railway in Jilin province on Dec 3. YANG BAOSEN/FOR CHINA DAILY

BEIJING — China's self-developed technology in high-speed railways is making significant progress in both technological innovation and operational capability.

The recent launch of the Shenyang-Baihe high-speed railway in northeastern China highlights these advances, featuring new trains and systems designed for extreme conditions and intelligent operation.

The Fuxing CR400BF-GS Electric Multiple Unit, deployed on this new line, is specifically engineered for extremely cold regions.

Meanwhile, construction of this railway has benefited from advances in intelligent manufacturing. Its "base-like" track slabs are key in allowing trains to run smoothly at high speeds. Notably, production of the Shenyang-Baihe high-speed railway track slabs, each measuring 5.6 meters in length and 2.5 meters in width, now takes only 10 minutes per unit, with height variations controlled to within the thickness of a human hair, greatly enhancing both precision and efficiency, said Yang Zhenhua, an official from China Railway No 9 Group Co Ltd.

Further pushing the boundaries of speed, the world's fastest bullet train, the CR450, has begun a battery of pre-service trials on a high-speed line in China, achieving a single-train speed of 453 kilometers per hour and a record relative passing speed of 896 kph.

Exceeding 400 kph means China's high-speed rail technology lacks mature reference as there is no commercial high-speed rail in the world operating at speeds higher than this, said Wang Lei, a designer from CRRC Changchun Railway Vehicles Co Ltd.

A major challenge was to reduce the train's running resistance. From 350 to 400 kph, the resistance increases by 30 percent, and 95 percent of this running resistance comes from the air.

To solve such an aerodynamic drag, the CR450 features a longer, sleeker nose, a 20-centimeter lower roofline and 50-metric-ton weight reduction, thereby cutting aerodynamic drag by 22 percent.

The excellence of China's high-speed railway is demonstrated not only through its robust "steel framework", but also by its advanced "intelligent brain".

The CTCS-3 ATP (Automatic Train Protection) and ATO (Automatic Train Operation) system, independently developed by the CRSC Research & Design Institute Group Co Ltd (CRSCD), has been implemented on the CR450 EMU.

Jiang Ming from CRSCD noted that the system features full intellectual property ownership and supports key autonomous functions, including inter-station operation, overspeed protection and precise stopping, thus ensuring safety even in low-visibility weather, among other features.

To support railway development in western China, a new generation train control system has also been designed to perform reliably in harsh environments.

Integrated with the BeiDou Navigation Satellite System, this new train control system fuses multiple data sources, such as satellite positioning, electronic maps and speed sensors, which significantly enhances the precision and reliability of train positioning.

China's high-speed railway network is on track to surpass 50,000 km in total length by the end of 2025. Additionally, China is showing growing expertise in building a high-speed rail network that is not only extensive, but also intelligent, resilient and ready for the future.

Xinhua

Top
BACK TO THE TOP
English
Copyright 1994 - . 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
CLOSE
 
主站蜘蛛池模板: 国产精品视频自拍 | 成人免费看片98欧美 | 太平公主秘史在线观看免费 | 亚洲四区在线 | 成年人在线免费看 | 一级黄色a级片 | 国产高清在线 | 波多野结衣国产 | 成人精品av | 亚洲欧美在线观看 | 制服.丝袜.亚洲.中文.综合懂色 | 国产毛片视频 | 国产精品一区在线播放 | 无遮挡黄色 | 国产一区二区三区免费视频 | 亚洲欧美高清 | 男人的天堂中文字幕 | 久久精品香蕉 | 天天看天天色 | 五月婷婷狠狠爱 | 成人一区二区三区四区 | 久久美女免费视频 | 天天综合国产 | 午夜精品视频在线观看 | 亚洲成人一区 | 亚洲色图另类小说 | 青青草在线视频免费观看 | 一级片观看 | 十八岁毛片 | 亚洲视频观看 | 精品亚洲在线 | 黄页网址在线观看 | 在线观看视频一区二区三区 | 国产精品久久久久无码av | 色在线看 | 欧美激情免费视频 | 欧洲精品一区二区 | 久久久久久影视 | 男女爱爱网站 | 麻豆成人入口 | 97操操|