7月9日，第十二届世界高速铁路大会期间，位于北京朝阳的国家铁道试验中心，成为国内外参会嘉宾关 注的焦点。这里，大家争相试乘体验世界首款试验运行时速450公里、商业运营时速400公里的新一代高 速动车组——CR450。 当前，CR450动车组已完成样车下线、型式试验、互联互通调试等一系列研发工作，正在开展考核试验 和性能验证，为正线试运行做各项准备。 "这意味着中国铁路已进入高铁科技创新'无人区'。"复兴号动车组总体技术专家、中国铁道科学研究院 集团有限公司（以下简称"铁科院"）首席研究员赵红卫告诉科技日报记者，为了将商业运营时速再提升 50公里，国铁集团牵头组建创新联合体，先后攻克永磁牵引、气动减阻、短距离制动等难题，在全球范 围内首次创建时速400公里动车组技术体系。 1.6倍功率提升 提高列车速度，首先要考虑提升动力牵引系统性能。 为增强牵引性能，研发人员决定将具有自主知识产权的大功率永磁牵引系统搬上CR450动车组，标志着 我国高铁开启了"永磁时代"。 "装车难度很大！"赵红卫介绍，"永磁系统有一大隐患，即电机在发生匝间或相间短路时，因永磁体缘 故，并不会停止转动，可能导致电机损坏，影响行车安全。" 为 ...

Group 1 - The core viewpoint of the articles highlights the high-quality development of China's rail transit equipment, particularly through the advancements made by CRRC Changchun Railway Vehicles Co., Ltd. in producing high-end rail vehicles such as high-speed magnetic levitation trains and hydrogen-powered trains [1][2]. - CRRC Changchun is actively engaged in digital transformation, which has significantly improved production efficiency by over 20% through collaborative digital methods [1]. - The company is involved in national key research projects, including the development of hydrogen-powered trains capable of reaching speeds of 250 km/h, indicating a focus on sustainable and advanced transportation solutions [1]. Group 2 - Jilin Province is accelerating the transformation and upgrading of traditional industrial enterprises during the 14th Five-Year Plan, showcasing a new momentum for revitalization in Northeast China [2]. - The automotive industry in Changchun is thriving, with companies like FAW Jiefang producing high-end trucks at a rate of one vehicle every 4.5 minutes, achieving a daily production capacity of 100 vehicles [2]. - Audi's new energy vehicle factory in Changchun is set to produce over 150,000 electric vehicles annually, marking a significant investment in sustainable automotive production [2]. Group 3 - The logistics advantages in Jilin Province are reducing costs for automotive parts delivery, contributing to the growth of local manufacturing [3]. - Jilin Chemical Fiber Group is transitioning to carbon fiber production, exporting materials to major companies in Europe and the U.S., indicating a shift towards high-value manufacturing [3]. - The digital transformation in traditional industries is revitalizing the manufacturing sector in Jilin, attracting more businesses to establish operations in the region [3].

"全球最快高铁列车"CR450动车组，最高时速达600公里的超导电动高速磁浮样车，世界首台双结构式 硬岩掘进机"雪域先锋号"……在第十二届世界高速铁路大会举办期间，我国一系列先进铁路技术和装备 集中展示，彰显了中国高铁领跑世界的自信与实力。 近年来，我国交通运输领域新质生产力加快培育，铁路、公路、水运等多个领域的科技创新取得显著成 绩。国家发展和改革委员会综合运输研究所主任、副研究员丁金学表示，当前传统交通运输与数字信 息、人工智能等新技术以及新能源新材料新工艺深度联动，为新质生产力发展提供了重要的孵化平台和 广阔的应用场景。 高铁技术持续突破 在与大会同期举办的中国国际现代化铁路技术装备展上，国家铁道试验中心展区人头攒动，观众被这里 展出的CR450动车组样车吸引，这是我国自主研发的运营时速高达400公里的全球最快动车组。 "作为新一代高速动车组，该车型通过技术优化，实现运行阻力降低22%，牵引效率提升4%，整体减重 10%，能耗下降20%，具有更高速、更安全、更节能、更舒适、更环保、更智能等特点。"中车长客股 份公司主任设计师王雷介绍。 对中国铁路来说，这个速度还不是极限。7月4日，在中车青岛四方机车车辆 ...

7月9日在国家铁道试验中心展区拍摄的CR450BF动车组 （左侧）。 新华社记者 才 扬摄 CR450动车组车厢。 本报记者 严 冰摄 7月11日，第十二届世界高铁大会技术参观活动现场，参 会代表乘坐CR400BF-GS复兴号技术提升型智能动车组， 体验京张高铁的运营服务。 王 玮摄（人民图片） 7月9日下午，第十二届世界高铁大会的重要活动之一——"高铁创新之旅"在国家铁道试验中心举行，包 含被称为"全球最快高铁列车"的CR450动车组样车在内的30列（辆）实车集中亮相，展示了中国铁路自 主创新的技术突破与全球轨道交通行业共创共赢的合作成果。 走进试乘的CR400BF-GS复兴号智能提升动车组列车，26摄氏度，温度宜人，窗外渐次闪过50余种不同 类型的线桥隧试验场景。整个体验之旅，线路不长，风景不少，新鲜感十足。30分钟的试乘时间里，高 铁列车急速驶过中国铁道博物馆（东郊展馆）、北京朝阳动车运用所，穿行隧道、滑入弯道，在直线行 驶时不断加速，乘坐平稳舒适，车厢内中外嘉宾一起感受到了中国高铁的先进技术和卓越性能，车厢 外，沿途的参观者们纷纷拿起手机拍照记录。"这就是中国高铁，创新、高效、便捷！"在现场参与体验 ...

Core Viewpoint - The article highlights the advancements in high-speed rail technology in China, particularly focusing on the CR450 train developed by CRRC Changchun Railway Vehicles Co., Ltd, which showcases significant improvements in speed, safety, and smart technology integration [1][2]. Group 1: Product Development and Innovation - The CR450 train has achieved a maximum test speed of over 450 km/h and features upgrades in areas such as intelligent interaction, safety monitoring, and passenger services, enhancing the overall travel experience [1]. - CRRC Changchun has transitioned from traditional manufacturing to intelligent manufacturing, producing a range of high-end rail vehicles, including high-speed maglev trains and hydrogen-powered trains [1][5]. - The company has developed a production management system that automates production planning and task distribution, improving efficiency and ensuring timely delivery of materials [2][3]. Group 2: Technological Integration - The assembly line incorporates over ten digital technologies, including 5G, automation, IoT, and big data analysis, ensuring precise quality control in the manufacturing process [2][3]. - Intelligent tools and monitoring systems have been implemented to enhance safety and reduce quality issues during assembly, such as the smart torque system that minimizes manual errors [3]. Group 3: Market Expansion and Global Reach - CRRC Changchun has successfully exported rail vehicles to over 20 countries and regions, with a cumulative contract value exceeding $14 billion, marking a significant milestone in China's rail equipment export history [4]. - The company signed its first contract for high-speed train exports to Europe during the 2023 Belt and Road Forum, further solidifying its international presence [3][4].

(活力中国调研行)从"地铁摇篮"到"中国名片" 中国高铁仍在加速 中新社长春7月15日电 (记者 马海燕 张瑶 石洪宇)"试验速度时速450公里，运营速度时速400公里，未来 投入商业运营后可进一步压缩时空距离，让旅客出行更加便捷高效。"中车长春轨道客车股份有限公司 (以下简称"中车长客")高级工程师王雷这样向来访的记者介绍跑出高铁新速度的CR450动车。 近日，"活力中国调研行"吉林省主题采访团一行走进中车长客。王雷说， CR450动车组样车运营速度、 运行能耗、车内噪声、制动距离等主要指标国际领先。动车组整车运行阻力降低22%，减重10%，车内 噪声降低2分贝，客室服务空间增加4%，行车与控制、司机智能交互、安全监控、旅客智能服务等均得 到全面升级。 目前列车正在开展一系列线路试验和考核，各项性能指标达到预期目标，争取早日投入商业运营。 和CR450动车同样受到关注的还有刚完成首次达速试跑的全国首列氢能源市域列车。列车以时速160公 里满载运行，每公里能耗仅为5千瓦时，最高续航里程可达1000公里。 据中车长客国家轨道客车工程研究中心新技术研究部副部长王健介绍，目前中车长客已完成了车辆能 耗、可靠性、稳定 ...

第十二届世界高速铁路大会现场 0:00 / 2:38 列车牵引供电系统一分钟内完成供电故障"自愈"；运营时速400公里的CR450列车惊艳亮相；铁路5G创新实验室里基站信号潮水般展开，百万级设备毫秒响 应……在第十二届世界高铁大会上，中国高铁"黑科技"再次惊艳世界，用颠覆性的技术创新树起新的行业里程碑。中国高铁的"智能心脏"，正以前所未有的 力量搏动。 "动力心脏"革命：1分钟自愈的智能供电网 "牵引供电系统是高速铁路列车的唯一动力来源，其安全可靠、智能高效、自主可控是高铁安全、高速、准点运行的关键。"中国铁设电化电信院院长罗健在 接受采访时表示。 当前，牵引供电系统为高铁的电力提供了可靠的保障，谈及为何可靠，罗健介绍道，牵引供电系统采用了中国标准的接触网，主要特征是谱系化的接触网系 统。接触网系统是高铁的大动脉，相当于人体的血管，为高铁列车进行供电。人体的动脉血管有粗有细，高铁的接触网系统也是按照不同的线路和标准进行 配置，实现了速度、性能、参数的平衡匹配。 CR450动车组样车 "CR450的使命就是巩固中国高铁的领跑地位。"铁科院机辆所所长张波在接受中外记者采访时提到，"CR450的目标是运营时速达到4 ...

Group 1: Core Insights - The 12th World High-Speed Rail Conference showcased advanced railway technologies and equipment from 521 companies across 14 countries, highlighting China's manufacturing capabilities in the railway sector [1][3] - China's railway technology is integrating intelligence, renewable energy, and digitalization, providing robust support for high-quality construction and efficient operation of the railway network [3][10] - The exhibition featured innovative equipment such as inspection robots and drones, enhancing maintenance and operational efficiency in high-speed rail systems [4][10] Group 2: Technological Advancements - The CR450 high-speed train, which can accelerate from 0 to 600 km/h in just 3.5 minutes, was presented as the "world's fastest" high-speed train, with significant improvements in weight, resistance, and energy consumption compared to its predecessor [8][10] - New equipment like the DJ3E-EV and HP-3017EV showcases advanced capabilities for complex geological conditions and efficient construction processes, indicating China's commitment to technological innovation in railway construction [6][10] - The integration of artificial intelligence in railway operations is enhancing efficiency and safety, with robots replacing manual labor in various tasks, such as underwater inspections and high-altitude work [10][11] Group 3: Industry Impact - By the end of 2024, China's railway operating mileage is expected to reach 162,000 kilometers, including 48,000 kilometers of high-speed rail, solidifying its position as the world's largest high-speed railway network [10][11] - The successful operation of international projects like the China-Laos Railway and the Jakarta-Bandung High-Speed Railway demonstrates China's growing influence in global railway construction and connectivity [10][11] - The 12306 online ticketing system is enhancing passenger experience, with projected passenger volume reaching 4.08 billion in 2024, while the railway freight system is streamlining logistics processes [11]

Group 1 - The perception of China as "cool" is increasingly recognized globally, reflecting the country's comprehensive national strength [1] - Since the 14th Five-Year Plan, China's manufacturing value added has exceeded 30 trillion yuan annually, maintaining its position as the world's leading manufacturing power for 15 consecutive years [3] - China has built the largest number of 5G base stations globally, with a total of 4.395 million as of March this year [4] Group 2 - The Beidou satellite navigation system has become a global supplier, with over 129,000 patent applications and services exported to more than 140 countries [5] - The CR450 high-speed train, designed for a maximum speed of 450 km/h, is set to become the fastest train in the world upon commercial operation [6][8] - The C919 large passenger aircraft has expanded its commercial routes significantly, marking its second anniversary of operation [9] Group 3 - The first domestically produced large cruise ship, "Aida·Modu," commenced commercial operations, with a second ship expected to be delivered by the end of 2026 [10] - The Chang'e 6 lunar mission has achieved significant discoveries, contributing new insights into lunar evolution [14] - China has the largest R&D workforce globally, with 26 of the world's top 100 technology innovation clusters, indicating a strong technological capability [17] Group 4 - The rise of robotics and AI in China is evident through various competitions and events, showcasing advancements in intelligent manufacturing [20][22] - China's cultural soft power has significantly increased, with a rise in global rankings from 8th to 2nd in the Global Soft Power Index [24] - The success of Chinese cultural products, such as the game "Black Myth: Wukong" and the film "Ne Zha," highlights the growing global influence of Chinese creativity [26][29][31] Group 5 - The expansion of China's visa-free travel agreements to 47 countries has led to a 96% increase in foreign tourist arrivals, enhancing the perception of a more open and attractive China [36]

Core Insights - The 12th World High-Speed Rail Conference was held in Beijing from July 8 to 11, celebrating the 200th anniversary of railways, highlighting China's advancements in high-speed rail technology and its global leadership position [1] Group 1: High-Speed Rail Achievements - China's high-speed rail network spans 48,000 kilometers, accounting for over 70% of the world's total high-speed rail mileage, covering 97% of cities with populations over 500,000 [7][9] - The CR450 train model was unveiled, featuring a 10% reduction in body weight, 22% lower running resistance, and 20% reduced energy consumption compared to the CR400 model, with a future operational speed of 400 kilometers per hour [4] - The Fuxinghao freight train, capable of 300 kilometers per hour, is under development, alongside the world's most powerful dual-source passenger-freight locomotive set to undergo trials in Beijing [6] Group 2: Technological Innovations - China has developed numerous technological innovations represented by the Fuxinghao train, and has established 13 international standards for high-speed rail systems under the International Union of Railways [9] - The high-speed rail sector in China is characterized by the longest mileage, largest construction scale, and most comprehensive technology, with diverse application scenarios [6]