在执行此命令时，它显示一组十字瞄准线。
通过右键单击窗口，使用十字瞄准线选择要捕获的窗口。
You use the crosshairs to select the window that you want to capture an image of by right-clicking on that window. The command then writes its output to the filename.xwd
当执行xwininfo命令时，显示一组十字瞄准线。
When you execute the xwininfo command, a set of crosshairs is displayed.
XLS传感器具有十字瞄准线和视觉反馈功能，可用于空间探测。
XLS sensors feature cross-hair option for spatial probing with visual feed-back.
XLS传感器具有十字瞄准线和视觉反馈功能，可用于空间探测。
XLS sensors feature cross-hair option for spatial probing with visual feed-back.
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