毫秒级秒表，精确计时，快捷键，有暂停、记录功能-Millisecond stopwatch, accurate timing, shortcut keys, a pause, record

利用Timer控件，通过点击“开始”按钮，开始计时，点击“停止”按钮，则停止计时，并记录，可精确到毫秒。-Using Timer control, by clicking on the " Start" button to start timing, click the " Stop" button, then stop the clock, and records, accurate to milliseconds.

精确计时类，可以精确的计时，计时程序运行的时间。-Accurate timing