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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.Next, we will listen to the onchange event in the drop-down box of colorSelect and the oninput event in the numberInput input box respectively, and then make corresponding processing in these two events.　　她相信事情总有解决的办法；她期待事情可以find the way out。儿子也好，闺女也好，这亲事都要慎重，不少媒人上门来求，她得好好琢磨才成。还有花香，跟咱们家门口的可是不一样？等下再去竹林，或者松树多的地方，你就发现那味道又不同了。徐阶听着又叹了一口气，这些年没别的，他主要就是在叹气：有，只是他不愿入我王门。