Great attention must be paid to linking theory with practice.
必须十分注重理论联系实际。
Merely talking about linking theory and practice without actually doing anything about it is of no use, even if one goes on talking for a hundred years.
如果只是口头上讲联系，行动上又不实行联系，那末，讲一百年也还是无益的。
Show the process of allocation and recycle with the best fit algorithm in the operating system. The purpose of linking theory with practice is met.
形象地展示了操作系统中可变分区存储管理中采用的最佳适应算法的分配与回收过程，达到了理论与实践相联系的目的。
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