由于仍使用单比较器或窗口比较器，它的结构简单且易于集成。
Because only single comparators or window comparators are used, this scheme is easy to be implemented.
用窗口比较器和LED可大致显示墙体中被测物体与探测器之间的距离。
With a simple window comparator and LEDs the distance between the detector and the object in a wall can be displayed approximately.
提供选项给用户在新的浏览器窗口打开以方面进行比较。
Allow users the option to open results in a new browser window to assist comparison. Sites like Ask and Easy Search Live are experimenting with page previews.
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