说明：  操作系统的固定分区模拟程序。固定分区将内存按用户需求分分成若干固定存储区，每次分配进程、撤销进程都在分区中操作
(The operating system of the fixed partition simulation program. Fixed partition memory by user demand sub-divided into a number of fixed storage area, each allocation process, the revocation process operating in the partition)