Move the mouse over the class frame, and a toolbar for adding attributes and operations is displayed.
将您的鼠标移动到类框架上，然后一个用于添加属性和操作的工具栏会显示出来。
Select Processing > Delta, and use the slider to move to the end time of the test, which is 4:00 p.m. Figure 20 shows the toolbar.
选择 Processing > Delta，把游标移动到测试的结束时间，即 4:00 p.m.。 图 20 显示工具栏。
The time toolbar allows you to define a time interval, and then rapidly move forwards or backwards by that interval at the click of a button or press of a key.
时间工具栏允许你定义一个时间增量，然后靠单击某按钮或按下某键来快速向前或向后调整时间。
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