泄漏可能源自系统的任何地方，如管道，累加器，还有坏掉的一个小压力开关。
The leaking could come from anywhere in the system, from tubing to an accumulator to a tiny pressure switch gone bad.
为了便于进程间通讯，大部分系统都支持进程间通讯(IPC)资源，如管道和套接字。
To facilitate communication between processes, most operating systems support Inter process communication (IPC) resources, such as pipes and sockets.
其次，因为sed是一种流编辑器，所以，它可以对从如管道这样的标准输入接收的数据进行编辑。
Secondly, because sed is a stream editor, it can perform edits to data it receives from stdin, such as from a pipeline.
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