本次下线的轴承，调心滚子轴承外径达2300毫米，整体重量达10.9吨。推力调心滚子轴承外径达2100毫 米，整体重量达2.1吨。(央视新闻) 7月9日，全球最大辗环机(22米)全系列轴承在洛阳下线交付，这是一项承载国家重器核心动力的"超级 关节"的突破！它标志着我国在超大型、超重载轴承的设计与制造领域又一次实现了"领跑"。 ...

Core Viewpoint - The article highlights the comprehensive governance model implemented in Nanyuan Street, Shenzhen, focusing on electric bicycle management through a combination of party leadership, technological empowerment, and law enforcement collaboration [1][2][3][4] Group 1: Party Leadership - Nanyuan Street is developing a "rider-friendly demonstration street" to better serve new employment groups, integrating party work with emerging sectors [2] - Initiatives include creating a 10-minute service circle for new employment groups, optimizing road facilities, and establishing community support systems [2] Group 2: Technological Empowerment - The first smart battery swap park in the country has been established in Nanyuan Street, featuring 54 charging spots and 200 battery swap stations, capable of servicing over 2,000 electric bicycles daily [3] - A centralized management platform for electric bicycle charging and swapping facilities has been launched, enabling real-time monitoring and management of equipment and battery health [3] Group 3: Law Enforcement Collaboration - A joint enforcement initiative has been launched to address illegal parking of electric bicycles, resulting in the addition of over 4,000 regulated parking spaces and significant improvements in traffic order [4] - The governance model emphasizes a systematic, collaborative, and normalized approach to managing non-motorized vehicle parking and safety [4]

"这台制冷机使用的氦气压缩机、氦气体轴承透平膨胀机、低温换热器、超大型高真空绝热冷箱等核心 部件，全部由我国自主研发。其中，超大型高真空绝热冷箱总长约28米、直径超4米、重达180吨；氦气 体轴承透平膨胀机在重载高功率的情况下转速高达10万至15万转每分钟。"中国科学院理化技术研究所 研究员刘立强说，这是我国在超大型氦低温制冷机研制方面取得的重要突破，该装备已经在安徽合肥开 幕的第三届中国（安徽）科技创新成果转化交易会上首发首展。 （文章来源：科技日报） 记者27日从中国科学院理化技术研究所获悉，该所与中山先进低温技术研究院等单位的科研人员成功研 制出国内首台万瓦级氦制冷机。该制冷机是我国科学家研制成功的首台超大型氦低温制冷机，液化模式 下氦气液化率达3370升每小时，将应用于国家重大科技基础设施加速器驱动嬗变研究装置，为处理核废 料提供低温环境。 液氦温区制冷技术不仅能为基础科学研究、医疗设备研发、稀有气体分离等提供关键技术支持，还能为 解决大规模清洁能源的储运挑战性问题提供液氢技术方案，促进新能源产业可持续发展。万瓦级氦制冷 机是指液氦温度（即零下269摄氏度）下制冷量达10000瓦以上的超大型低温制冷机 ...