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143MB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.
研究了非缓冲体系中性氨基酸在732型强酸性阳离子交换树脂上的离子交换平衡，并提出了平衡模型。
Ion exchange equilibrium of neutral amino acids on 732 strong acid cation exchange resin in non buffer systems were studied and an equilibrium model was proposed.
改进的输入缓冲方案是在AT M交换单元的输入队列和仲裁逻辑之间加入一个准随机存储器。
The improved model of input buffer presented is to insert a quasi random memory between input queue and arbitration logic at ATM switching unit.
本文分析和讨论了在采用分组交换的计算机网络中，提高缓冲器使用效率的最佳报文分组，其结论可供设计时参考。
This paper analyses and discusses on the optimal length of packet for increasing efficiency of buffers in packet-switching network. The conclusions are useful in network design.
研究了AT M交换中缓冲管理机制和信元丢弃策略。
Researches on buffer management and cell discarding in ATM switch.
您要求的缓冲区大小可能导致由于内存交换而丢失帧。您确定要分配这样大小的缓冲区吗？
The buffer size you have requested may cause frames to be dropped due to swapping. Are you sure you want to allocate a buffer of this size?
集中处理信元缓冲的AT M交换机结构复杂、扩展性不好、不易保证高吞吐率，而由多级交换单元分布处理信元缓冲可克服这些缺点。
There are some drawbacks in ATM switch unifying buffer: complicated structure, lack of expansibility and difficulties in ensuring to ensure high throughput.
提出了一种采用伸缩缓冲流量控制方法、缓冲虫洞路由交换机制、支持可变长度数据包传输的链路控制协议。
We designed and implemented a simplified link-level protocol with elastic buffered flow-control and buffered wormhole routing switching, it can support to transmit variable-length packet.
研究了交换控制电路中基于输入缓冲的交换结构，提出了一种请求移位的方法处理输入缓冲和中央仲裁器之间的仲裁延时；
This paper describes the implementation of buffer manager that is used in switch circuit, provides a request shift method to handle the latency between input buffer and central arbitration.
原因是当空气交换量大时，和热缓冲材料相比湿度缓冲材料的功能较弱，而且寿命不长。
A reason for this is that RH buffering by materials is feeble and short lived compared with temperature buffering when the air change rate is large.
排队策略与缓冲技术是交换矩阵设计的核心，同时也是交换矩阵时延产生的主要因素。
The queue strategy and buffer technique are the core of switch matrix design and they are also the main factors in time delay generation of switch matrix.
典型的ATM输出缓冲交换结构有着理想的性能，但需要N倍端口速率的高速传送而难以实现。
The typical model of output queueing in ATM switching has ideal performance, but is difficult to realize because of the need of high speed transfer that is N times the port speed.
输入缓冲交换开关已经在越来越多的AT M交换机和高性能路由器中使用。
Input Queued switches are increasingly used in ATM switches and high performance routers.
此处对缓冲区大小所设置的限制是为了优化消息交换的性能。
The limitations on buffer size set here are for optimizing the performance of message exchanges.
特别是网络适配器，经常使用循环缓冲区来与处理器交换数据包。
Networking adaptors, in particular, often use circular buffers to exchange data (packets) with the processor.
使用路由缓冲又叫做快速交换。
本文主要内容包括：研究了AT M交换中缓冲管理机制和信元丢弃策略。
This thesis consists of the following: 1. Researches on buffer management and cell discarding in ATM switch.
增加缓冲区大小的代价很高，因为它来自不能交换到磁碟的未分页记忆体，所以尽可能让缓冲区愈小愈好。
Increasing the size of the buffer is expensive, as it comes from non paged memory that cannot be swapped out to disk, so keep the buffer as small as possible.
确定下列每对氨基酸在pH7.0的缓冲液中，哪个先从离子交换柱上洗脱下来。
For each pair of amino acids, determine which will be eluted first from the ion-exchange column using a pH 7.0 buffer.
确定下列每对氨基酸在pH7.0的缓冲液中，哪个先从离子交换柱上洗脱下来。
For each pair of amino acids, determine which will be eluted first from the ion-exchange column using a pH 7.0 buffer.
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