IsValid - Test for an underlying system device object.
测试这个实例是否有一个底层系统设备对象。
They supply a simple layer on top of what the underlying system provides.
它们在基础系统所提供的安全性之上提供一个简单的安全层。
The basic starting point of statistics is the stochasticity of the underlying system.
统计的基本出发点是研究系统具有的随机性。
This scheme works well for aspects that require very little knowledge of the underlying system.
对于需要很少底层系统信息的方面，这个方案可以工作得很好。
Components described below such as widget sets and desktop environments, use X as the underlying system.
下面介绍的组件，例如部件集和桌面环境，使用X作为底层的系统。
In some cases, the underlying system call is completely omitted, or replaced by a completely different call.
在某些情况下，底层的系统调用完全被省略掉，或者使用完全不同的调用取代。
It still used an underlying system of numerical designations, but allowed you to reach a computer by name as well.
新方案仍然使用数字番号的基本系统，但是，还允许按名联络计算机。
The wrapper function does whatever it thinks it needs to in order to pretend to have made the right underlying system call.
包装器函数将执行它认为需要的操作，以假装执行了正确的底层系统调用。
A virtual processor is an abstraction for a processing resource and maps to a hardware thread on the underlying system.
虚拟处理器是处理资源的抽象，可映射到基础系统中的硬件线程。
An instance reboot is similar to a system reboot, though in this case a reboot of the affected instance, rather than the underlying system, is required.
实例重启与系统重启相似，即使这样，我们需要的是重启受影响的实例而不是重启基本系统。
Knowing how JSR-109 works allows you to configure a J2EE web service without having to explore and learn the implementation details of the underlying system.
知道了JSR- 109如何工作就使得你可以配置一个J2EEWeb服务而不需要学习底层系统的实现细节。
After the message is rolled back to the destination, the underlying system redelivers the message based on the destination's maximum failed delivery setting.
将消息回滚到目的地后，基础系统基于目的地的最大失败提交次数设置重新提交消息。
That function, in turn, ensures that the pseudo wrappers are set up, and that access to the underlying system calls is available, and then it runs a wrapper function.
这个函数反过来确保设置了pseudo包装器，以及可以访问底层的系统调用，然后它再运行包装器函数。
DB2 supports all the page sizes (4-kilobyte, 64-kilobyte, 16-megabyte, and 16-gigabyte) that are available with the underlying system for its buffer-pool-shared memory region.
DB 2支持缓冲池共享内存区域使用底层系统上可用的所有页面大小(4KB、64KB、16 MB和16 GB)。
This is not that difficult a problem; since they are small functions, you can even include them in your own program's source whenever the underlying system doesn't provide them.
这并不是一件那么困难的事情；因为当底层系统没有提供它们时，您甚至可以将一些小函数直接包括在自己的程序源代码中。
Requirements volatility stems largely from the rapid pace at which underlying system technologies change; this leads to early obsolescence of designs and components that might otherwise be reusable.
在底层系统技术以快速的步伐发生变化时，需求变动性就会大量地滋生；这会导致设计和组件的提早退化，否则它们是可重用的。
Since there is no underlying file system or data on the presented storage, it takes mere seconds to allocate on the back-end storage subsystems.
因为现存的存储上不存在任何底层文件系统或数据，所以在后端存储子系统上进行分配只需要几秒种。
External tables provide a normal table interface to data files that reside in the underlying operating system.
外部表对驻留在底层操作系统中的数据文件提供一个普通的表界面。
In other cases, the repository hierarchy could be representative of an underlying file system, with content being limited to a single location.
在另外一些情况中，存储库的层次结构可以代表一种底层文件系统，将内容限制在一个单一位置上。
First, it does not need to rely on the underlying operating system for internationalization support.
首先，它不需要依赖于底层操作系统来提供国际化支持。
Operating system and underlying infrastructure.
操作系统和底层基础设施。
As an application executes, it makes system calls to the underlying operating system whenever it needs to open a file, send a packet, or otherwise use system resources.
在应用程序的执行过程中，当需要打开文件、发送数据包或者使用系统资源时，它会对基础操作系统进行相应的系统调用。
His simplification is based on a program's regular requests from the underlying operating system, known as system calls.
他的简化工作是基于一个程序在基本操作系统中的常规要求，称为系统调用。
The virtual file system is an abstraction of the underlying physical file system.
虚拟文件系统是基础物理文件系统的抽象。
You will be able to add space to your table space only by adding space to underlying file-system.
只有通过添加空间到底层文件系统，您才能够将空间添加到您的表空间。
Finally, the underlying operating system must be in good health to support the applications.
最后，底层操作系统必须处于良好的状态才能支持应用程序。
Like file storage areas, fixed storage areas use a directory structure on the underlying file system.
和文件存储区域一样，固定存储区域使用底层文件系统上的目录结构。
The structure and size of a file depends on the underlying file system—the subsystem that persists the file data to a physical device.
文件的结构和大小取决于底层文件系统 —即把文件数据存储到物理设备上的子系统。
For other graphic elements, you can use pseudo-colors that automatically respond to color changes in the underlying operating system.
对于其他的图形要素，您可以使用自动响应基本的操作系统中的颜色变化的假彩色。
Releasing space allows the underlying operating system to cut down on swap space requirements and reuse memory mapping tables.
释放空间使底层操作系统减小对交换空间的许求并且重用内存映射表。
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