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3. Physical period: Uniform circular motion is a kind of periodic motion. The so-called periodicity refers to the fact that after a certain period of time, the moving object repeats back to its original position, and the instantaneous speed repeats back to its original size and direction. The time it takes for an object to move in a uniform circle is called a period. The period is expressed by the symbol T, and the period is also a physical quantity describing the speed of uniform circular motion. The long period indicates the slow motion of the object, while the short period indicates the fast motion of the object.However, those organizations that established the late on-line and off-duty class mode will position themselves according to the market demand in the new stage in order to achieve differentiated development. For example, Tong Wang Xing is a children's ability and quality training institution for B-end institutions such as early childhood education. In view of the low utilization rate of classrooms in the current early childhood education institutions and the difficulty in consuming classes in the pre-sale class mode, the franchisee has explored the franchise mode of "shared brand store", i.e. The franchisee does not need to change its own brand, but only needs to build 1 to 2 Tongwangxing brand classrooms in its operating area and integrate Tongwangxing's market and operating system into its original brand system.　　与此同时，毛泽东也与杨昌济的女儿杨开慧（周冬雨 饰）谱写了一段乱世恋情……【2020年日剧番外】《顶尖手术刀 -天才护士的条件-》文革时期的江南小城，小小的铁路装卸站，一段偶然的相遇，少女陈星与少年陆粞互生倾慕。装卸站的工作固然艰苦，却也快乐充实，又有心爱的人相伴，陆粞、陈星、甚至他们的好友勇志都沉浸于幸福的时光之中。但因为机智善良相貌不凡的陆粞鹤立鸡群，连装卸站的头号美人水香都对他青睐有加……爱丽丝（米拉·乔沃维奇 Milla Jovovich 饰）重回在东京，向安布雷拉公司复仇。后者潜藏在地球的底部，威斯克（肖恩·罗伯茨 Shawn Roberts 饰）执行着自以为是的安 全技术标准。爱丽丝闯入了禁区，直捣黄龙。而威斯克竟然不惜毁灭城市做困兽斗。最终，当他驾驶着直升机逃离时，却被爱丽丝胁迫，情急之下，他向爱丽丝身上注入了具有对T细胞的免疫病毒，令她丧失了超能力，只能驾机飞翔荒无人烟的阿拉斯加。地球上已经177天没有生命迹象。然而，爱丽丝却意外发现了克莱尔（艾丽·拉特 Ali Larter 饰）。她们循着阿卡迪亚信号，回到了地狱之城，满眼的僵尸令人触目惊心。迎接她们的是同样听到信号的幸存者。在神秘犯人克里斯（文特沃斯·米勒 Wentworth Miller 饰）的帮助下，她们向阿卡迪亚之船进发……