The only time you need to shut down your system is when you need to add new physical disks.

唯一需要关闭系统的情况是在需要添加新的物理磁盘时。

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For product testing, hardware and operating system-level virtualization helps in reducing the number of physical servers required and time required to set up the servers.

对于产品测试，硬件和操作系统级虚拟化有助于减少需要的物理服务器数量和设置服务器所需的时间。

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For this article, I focus on the control system and the ways in which you can simulate and validate it before spending time embedding it in a physical robot.

对于本文来说，我们将着重介绍控制系统，以及在将其嵌入物理机器人之前可以对其进行仿真和验证的方法。

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For those that argue that the playoff system puts student-athletes at physical risks or impedes their academic progress because of increased playing time, this plan only adds 1 more game for 4 teams and 2 games for the national finalists.

FORBES: College Football Super Conferences Can Pave Path to Postseason Playoff System