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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.朱诚（佟大为）在德国留学回国自己创业，张奕（刘烨）大学生，在参加毕业答辩时，赶到学校路上遇到别人出车祸，帮助肇事者送到医院。误了答辩没有拿到毕业证出来工作。在辉煌集团上班，因为业务认识了朱诚，两个人成为了朋友。辉煌集团董事长的女儿安晴晴（石微羽）和张奕是同学对他有好感，朱诚的出现使三个人关系复杂了，这时辉煌集团出现了危机，为了挽救公司朱诚和张奕联起手来，朱诚应聘到别的集团做卧底，众人以为朱诚背叛大家，随着事态的发展终于迎来转机，他们之间的感情也发生了变化，事业、爱情、友情怎么选择……该剧以远古帝王大舜传奇曲折的一生为主线，讲述了尧、舜、禹三代历经磨难、治理水患，为民造福、成就伟业的故事。Residents! Let's unite and act! Let's learn from Ningbo Zhenhai people! Learn from them to pull back the government's more than 50 billion major petrochemical projects from the brink! Let's firmly demand the relocation of the Green Energy Waste Incineration Plant for ourselves, for the sake of our families and for the sake of future generations, and firmly oppose the expansion of the second phase of the Green Energy Waste Incineration Plant!上奏弹劾，他可就完了。3. The word "long sound" refers to the sound of a flute lasting four to six seconds.别忘记了，越国的国策是坐山观虎斗，是让楚汉争斗，越国谋利的。