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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.我军大败，废丘城也被攻占。影坛鬼才王晶早期一部具国际视野的动作电影，全片除了充满越战式的游击战斗，还有传统的埋身肉抟，并在泰国实地取景。巨富之女贺盈聘请罗力于七天之内到柬埔寨，从杀手乃文手上夺回一盒录有商业秘密之录音带。罗力为了一百万酬劳，毅然与贺盈订定合约，并召集好友组织一支敢死队，潜入柬埔寨与游击队交涉。几经艰险，罗力终于完成任务，不料整个事件背后原来有极大阴谋……3. Use object instead of string to record the current state, which makes the state switching more clear at a glance.Chapter 7 Road Map to Become an Outstanding Person詹妮弗·杰森·李、雨果·维文加盟Showtime迷你剧《浮生若梦》(Patrick Melrose，暂译)，将与本尼迪克特·康伯巴奇上演对手戏。剧集共5集，每集均改编自爱德华·圣·奥宾同名自传小说五部曲中的一部。“卷福”在剧中饰演生于优渥之家的麦罗斯，他的坎坷一生穿起了当代英国上流社会的世故人情，杰森·李与维文将分饰麦罗斯的父母。爱德华·贝尔格(《德国八三年》)将担任本剧导演，剧本则由知名编剧大卫·尼克尔森(《一天》)操刀。爷爷、奶奶他们那时候还在世，可惜我没有好好地尽孝。