队列级监视为给定的时间间隔提供各种频率属性的图形展示，例如打开率、关闭率、获取字节比率、放置字节比率以及浏览率。
Queue-level monitoring provides a graphical representation of various frequency attributes, such as open rate, close rate, get byte rate, put byte rate, and browse rate, for any given time interval.
为使用图形取代文本来表示展开和关闭状态，更改代码，改变微调控制项对象的innerhtml值，使其指定一个图像标记而非文本。
To use graphics instead of text to express the open and closed states, alter the code that changes the innerHTML value of the spinner object to specify an image tag instead of text.
他们可以打开和关闭用户的DVD驱动器、在用户电脑上播放图形图像、使用文本语音切换应用程序让电脑大声朗读，甚至隐藏用户的开始按钮。
They can open and close their DVD drives, display graphic images on screen, have the computer read aloud using text-to-speech applications, or even hide the start button.
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