与计数函数类似，当在一个规则中使用多个具有分组关键字的聚合，对分组与计数操作必须进行级联，如图14所示。
Like the counting function, when several aggregations with grouping keys are used in a rule, the group and count operations must be cascaded as shown in figure 14.
如果利用相同的分组关键字或者没有分组关键字，来聚合多个列，那么，所有的聚合都在单个数据传递中的相同操作中进行。
If more than one column is aggregated using the same grouping key or without a grouping key, then all the aggregations are computed within the same operation with a single pass over the data.
spu_rlmaskqw会对整个4字同时进行操作，不过最多只能移动7位(它会对count取模，从而将其放入正确的范围内)。
Spu_rlmaskqw operates on the whole quadword at a time, but only up to 7 bits (it performs a modulus on count to put it in the proper range).
关键字触发器并不是UML2的一部分，它只是用来强调这些操作是如何实现的。
The trigger keyword is not part of UML 2 and is included only to highlight how these operations are realized.
左边的对等层完成两个套接字的写操作，每个100字节。
The peer on the left performs two socket writes of 100 bytes each.
该操作所需时间比4096字节占用一个扇区时所需时间多。
This operation takes longer than when the 4096 bytes occupy a single sector.
在记忆棒增量分发数兆字节内存时，一次泄漏是微不足道的，但是连续操作数小时后，即使如此小的泄漏也会削弱应用程序。
This is tiny in a time when megabytes are given away in memory sticks as promotional items but, over hours of continuous operation, even such small losses can cripple an application.
通常由与机构的套接字通信完成的一个操作，该操作同步且可能失败，因而不适合作为一个业务规则操作。
An operation that is usually carried through synchronous, possibly failing, socket communication with the bureau and therefore not appropriate as a business rule action.
打开或关闭远程主机或服务器的套接字是一个网络操作，不需要对运行此应用程序的图像进行大量处理工作。
The ability to open and close sockets to remote hosts or servers is a network operation and does not require any large amount of processing on the image running the application.
每当对应的客户端套接字包含读、写或错误操作时，调用对应的回调函数。
Each time a corresponding client socket contains any read, write or error operations, the corresponding callback function is called.
在这个套接字上进行的任何重叠操作都将通过完成端口发出完成通知。
Any overlapped operations performed on the socket will use the completion port for notification.
如果在读的时候，数据尚未完全到达套接字，则线程将在读操作上阻塞，一直到数据可用。
If during a read, data has not completely arrived at the socket, the thread will block on the read operation until all the data is available.
如果您熟悉磁盘结构，就知道磁盘是被分解成扇区的，大小通常是512字节；所有读写操作均在成倍大小的扇区中进行。
If you're familiar with disk structure, you know that disks are broken down into sectors, which are normally 512 bytes in size; all read or write operations occur in multiples of the sector size.
这是因为大多数套接字操作都是异步地进行的，其中套接字进行轮询以检查数据是否出现，而不是使得应用程序处于阻塞(等待)状态以等待响应。
This is because most socket operations are made asynchronously in that the socket is polled to see if data is present rather than having the application block (wait) for the response.
这个操作通常只是修改了几个，或者几千字节的有价值的信息。
That generally is just modifying a few bytes, a few kilobytes worth of information.
若必须处理许多兆字节的XML文档，花费内存、磁盘空间和CPU开销来操作这么大的文档通常是不实际的。
If you must deal with many-megabyte XML documents, it's often impractical to spend the memory, disk space, and CPU overhead to manipulate such huge documents.
RPG文件打开可以在RPG初始化阶段隐式发生，也可以通过RPGOPEN操作或在文件定义上使用USROPN关键字显式发生。
The RPG file open can occur implicitly during the RPG initialization phase or explicitly via the RPG open operation and the use of the USROPN keyword on the file definition.
在使用ONLINE关键字时，DDL操作是在没有将排它锁应用于定义特定索引表的情况下执行的。
When you use the ONLINE keyword, DDL operations execute without applying an exclusive lock to the table on which the specified index is defined.
缺省情况下，几乎所有传统的UNIX操作系统都以 512字节块为单位报告大小，而不是千字节。
Nearly all traditional UNIX operating systems report the size in 512 byte blocks rather than kilobytes by default.
通常，象在套接字之间进行读写之类的操作都是阻塞操作。
Typically, operations such as reading and writing across sockets are blocking operations.
通过保持数据对齐并针对16字节边界进行填充，向量操作就可以毫不费力地执行了。
By keeping the data aligned and padded to 16-byte boundaries, vector operations can be performed effortlessly.
扫描程序读取缓冲中的单个字符并返回解析器能理解的记号(称做标记)——如关键字、操作符及针对特定语言的标点符号。
A scanner reads in the individual characters of a buffer and returns symbols (called tokens) that the parser will understand — such as keywords, operators, and language-specific punctuation.
当一端对一个套接字执行写操作时，可确保对等端读出的数据大小与此相同(请参见图5)。
When a peer performs a write on a socket, it is guaranteed that this same-sized chunk of data will be read at the peer endpoint (see Figure 5).
正如微软的习惯性做法，总是抢在一月份发布它们不完善的操作系统，而早期的用户将不得不为自己的系统打上若干兆字节的补丁。
As is its habit, Microsoft released the much-delayed OS in semi-complete form in January; early adopters have been receiving frequent multi-megabyte system updates ever since.
具体来说，请注意数组被补全为16字节；这是缓存线路的大小，dma引擎喜欢按照缓存线路大小进行操作。
In particular, note that the array is padded out to 16 bytes; this is the size of a cache line, and the DMA engine likes to work in cache lines.
UTF - 8字符集比任何其他多字节编码格式更易于分析和操作。
The UTF-8 character set is easier to parse and to manipulate than any other multi-byte encoding format.
这种套接字通信形式适用于操作 HL7V2消息的早期医疗系统，HL7 V2 消息是作为基于TCP/IP 的LLP实现的。
This form of socket communication worked well for earlier healthcare systems that operate on HL7 V2 messaging, which is implemented as LLP over TCP/IP.
它还规定在存储设备与一组32位矢量寄存器(Vector Register,VR)之间存取和储存的字节、半字、字和四字操作数。
It also provides for byte, halfword, word, and quadword operand fetches and stores between storage and a set of 32 Vector Registers (VRs).
参数list指定这是一个全文搜索操作，而参数srsearch 指定了搜索关键字（例如，“michelangelo”）。
The list parameter specifies that this is a full-text search operation, while the srsearch parameter specifies the search keyword (in this case, "michelangelo").
参数list指定这是一个全文搜索操作，而参数srsearch 指定了搜索关键字（例如，“michelangelo”）。
The list parameter specifies that this is a full-text search operation, while the srsearch parameter specifies the search keyword (in this case, "michelangelo").
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