foreground signal的意思|示意

Bring it to the foreground and provide a line of input followed by Ctrl-d to signal end of input file.

将该命令列表放到前台，添加一行输入，最后按下Ctrl - d表示输入文件的结尾。

The circuit is adapted to the signal processing of CCD camera. because of its simple structure , high reliability and stable performance, this circuit has a widely applied foreground.

该电路适用于CCD相机中的信号处理，其结构简单、可靠性高、性能稳定，具有广阔的应用前景。