时速400公里的CR450动车组正加紧研制，样车计划年内下线

美国地区银行与美债收益率的负相关程度创2000年1月份编制这一指标以来的最高。","multimedia":{"img_url":["https://n.sinaimg.cn/zhibo/603/w835h568/20240415/7ba1-978772155c5ae316a4c9b88bd45f0d81.jpg"]},"commentid":"live:finance-152-3577805:0","compere_id":0,"creator":"mengfei11@staff.sina.com","mender":"mengfei11@staff.sina.com","create_time":"2024-04-15 02:58:47","update_time":"2024-04-15 02:59:22","is_need_check":"0","check_time":"1970-01-01 08:00:01","check_status":"1","check_user":"","is_delete":0,"top_value":0,"is_focus":0,"source_content_id":"0","anchor_image_url":"","anchor":"直播员","ext":"{"stocks":[{"market":"fund","symbol":"161121","key":"u94f6u884c"},{"market":"fund","symbol":"515290","key":"u94f6u884c"},{"market":"globalbd","symbol":"usg1y","key":"u7f8eu503au6536u76cau7387"},{"market":"globalbd","symbol":"usg5y","key":"u7f8eu503au6536u76cau7387"},{"market":"globalbd","symbol":"usg10y","key":"u7f8eu503au6536u76cau7387"}],"needPushWB":false,"needCMSLink":true,"needCalender":false,"docurl":"https:\/\/finance.sina.com.cn\/7x24\/2024-04-15\/doc-inarvwwa5029358.shtml","docid":"narvwwa5029358"}","old_live_cid":"0","tab":"","is_repeat":"0","tag":[{"id":"102","name":"国际"}],"like_nums":0,"comment_list":{"list":[],"total":0,"thread_show":0,"qreply":0,"qreply_show":0,"show":0},"docurl":"https://finance.sina.cn/7x24/2024-04-15/detail-inarvwwa5029358.d.html","rich_text_nick_to_url":[],"rich_text_nick_to_routeUri":[],"compere_info":""},{"id":3577773,"zhibo_id":152,"type":0,"rich_text":"【时速400公里的CR450动车组正加紧研制，样车计划年内下线】时速400公里的CR450动车组，正加紧研制，样车计划年内下线。CR450动车组的研制是在2017年下线的复兴号中国标准动车组CR400的基础上又一次技术突破，列车运行时速将从350公里提升到400公里。 CR450科技创新工程自2021年启动以来，先后完成了17项新技术部件样机研制，搭载CR400综合检测列车开展57项科研试验，创造了动车组明线单列时速453公里、相对交会时速891公里和隧道交会时速840公里新纪录。 （央视财经）