可以根据需要打开和关闭网格提供的基础设施。
Grid provides an infrastructure that you turn it on and off as needed.
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。
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.
当您打开它时，该软件生成一个您可用作业务操作需求建模的基础的业务模型的内存中的UML表示。
When you open it, the software creates an in-memory UML representation of the business model that you can use as the basis for modeling business operational requirements.
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