The owner of a memory block is a 16-bit word. It is set to zero to indicate a free block. A non-zero value is normally the PID (process identifier) of the owner, that is, the address of the PSP of the owning process. This is important when a process terminates, because DOS automatically frees all memory blocks that the process owned. Note that DOS performs no validity checks on the owner; any process can free or resize any block, regardless of who owns it, and the MCB owner need not be a valid PID.
2018年10月22日，习近平总书记考察珠海横琴新区粤澳合作中医药科技产业园时强调：“中医药学是中华文明的瑰宝。要深入发掘中医药宝库中的精华，推进产学研一体化，推进中医药产业化、现代化，让中医药走向世界。”
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