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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.专注国内外优秀艺人、练习生舞台萧公角道：来元帅大帐时，匆忙之际听到一群小兵闲聊，其中一人就提到过奇袭濮阳……当时本想叫住细问，但元晒军令召见，不敢耽搁，只得作罢。从南门出城？马车？朝西？杜殇自言自语地思索着这几个关键词，随即问道：能确定英布本人是从北门突围的吗？校尉，抱歉，本门两军正在大战，无法探查情况。Test Scenario 1: Repeat to Jump Yourself (Set SingleInstance Yourself)[Help] Uncle Ou said in the first/second season that the slight gap between those who always strive to reach the top and those who are willing to lag behind will have a great impact when they enter society.USA宣布《黑客军团 Mr. Robot》第四季就是剧终季；另外，第四季会在19年才播出。