Descriptors might represent a connection to a device, pipe, or a socket for communicating with another process or to a normal file.

描述符可以表示到设备、管道或套接字的连接，这些连接用于与另一个进程或普通文件进行通信。

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A socket functions much like a named pipe but can span hosts.

套接字的功能与命名管道很相似，但是可以跨主机。

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Primer is necessary to penetrate and soften both pipe and fitting socket surfaces in order for the solvent cement to properly bond.

有必要采用底漆来渗透和软化管道和管件承插端口表面，使得液状粘固剂能够完全粘结。

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