抖动的典型标志是，当操作系统试图释放资源时，首先警告进程以释放分页空间，然后终止整个进程。
A classic sign of thrashing is when the operating system attempts to release resources by first warning processes to release paging space and then killing entire processes.
由于机械触点的弹性作用，通常按键在按下和释放时都存在一个抖动的暂态过程。
Due to the flexibility of the role of mechanical contact, usually in the press and release button when there is a transient process of jitter.
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