... exchange area facilities 交换区设施 exchange buffering 交换缓冲 exchange classes 交换所等级 ...
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该命令显示系统中的空闲内存、已使用的物理内存和交换内存的总量，以及内核所使用的缓冲区。
The command displays the total amount of free, used physical, and swap memory in the system, as well as the buffers used by the kernel.
现在应用程序使用了143 MB的物理内存，其余的内存均被缓冲区占用；另外，系统现在使用了18 MB的交换空间。
Now applications have used 143mb of physical memory, with the rest of being used for buffers; in addition, the system now needs to make use of 18mb of swap.
光分组交换由于缺乏高速光逻辑器件、光缓冲存储器等，因此还处于研究阶段。
OPS still is placed in to study the stage because of lacking of the high-speed optical logic device and optical buffer.
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