The OS column means the operation system type.

os列表示操作系统类型。

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Access to the operating system is denied, so any operation that requires OS-level access cannot be performed.

拒绝对操作系统的访问，因此无法执行需要操作系统级访问的任何操作。

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Function execution context correctness is one of the most easily violated critical properties by OS (operation system) kernel programs while it is non-trivial to be checked out.

函数执行上下文正确性是操作系统内核程序最容易违反且难以检查的正确性性质。

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Higher flash capacity also offers the possibility that the OS and applications can be stored on the flash memory allowing faster system operation and booting.

FORBES: Niches for Flash Memory at the 2013 CES