气体由系统入口法兰通过吸气管路吸入。
Air will be absorbed from system entrance flange by draw air pipe.
要使目标瘫痪，封闭地道系统入口通常是最简单的办法。
Sealing the entrances to a tunnel system is often the simplest way to disable it.
PAM是一种认证机制，它允许根据应用程序要求的变化定制一些系统入口服务，例如login、rlogin和telnet。
PAM is an authentication mechanism that enables system entry services such as login, rlogin, and Telnet to be customized to incorporate changes required for an application.
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