The virtual portion is quite expandable by the database server and can be paged out to disk by the operating system.
虚拟区可以通过数据库服务器得到较大扩展，并且可以通过操作系统将虚拟区页移出(page out)磁盘。
Virtual memory segment: This virtual portion is used for maintaining and controlling the resources needed by processes.
虚拟内存段：虚拟区用于维护和控制进程所需的资源。
When the database server is online and performing operations, it automatically attaches additional operating-system segments to the virtual portion, if the initial size is too small.
当数据库服务器处于联机状态并执行操作时，如果虚拟区的初始尺寸太小，数据库服务器会自动向虚拟区附加其他操作系统段。
Shared memory allows multiple processes to map a portion of their virtual address to a common memory region.
共享内存允许多个进程将它们的部分虚地址映射到一个公用的内存区域。
The virtual SCSI disks can be the entire physical disks, or only a portion and look like actual disks to the client partitions.
虚拟scsi磁盘可能是整个物理磁盘，也可能是其中的一部分，并且对于客户端分区来说，看起来就如同实际的磁盘。
Thus a portion of the virtual address space must be reserved to the kernel.
也就是说，操作系统内核将保留一部分虚拟地址空间。
A memory DC enables the system to treat a portion of memory as a virtual device.
内存设备环境能使系统处理的内存部分，就像虚拟设备一样。
s Pet Earth game where the earth is your virtual pet to take care of. They say they donate a portion of the retail price and ad revenue to plant trees.
’s地球宠物（PetEarth）游戏，让你把地球当做一个虚拟宠物来饲养，他们声称会将零售额和广告收入的一部分用来种树。
Virtual-extension portion is also pretty small; it contains thread heaps for DataBlade modules and other user-defined routines that run in user-defined virtual processors.
虚拟扩展区也极为小；它包含了用于DataBlade模块的线程heaps和其他在用户定义的虚拟处理器中运行的用户定义例程。
The portion of online game virtual goods turns out to be as big as that of cosmetic & skincare products.
网络游戏虚拟产品消费的部分也与美容护肤产品的份额相当。
The portion of online game virtual goods turns out to be as big as that of cosmetic & skincare products.
网络游戏虚拟产品消费的部分也与美容护肤产品的份额相当。
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