When extended, the blocker doors block the fan exhaust, forcing air in the reverse direction through the cascade segments.
当扩展时，阻流门阻止风扇排气，迫使空气反向通过级联段。
USB port Blocker is a small-sized and portable software utility that enables you to block USB port access to unauthorized users, as the name implies, by protecting it with a password.
US B端口拦截器是一种小型便携的软件工具，使您能够阻止US B端口访问未经授权的用户，正如其名称所暗示的，通过用密码保护它。
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