节是包含代码或数据的可移植可执行(PE)文件中的连续内存块。
Sections are blocks of contiguous memory in a Portable Executable (PE) file that contains either code or data.
这就是所谓的可移植可执行文件，且所有在windows上设计运行的程序需都要有它。
This is called the Portable Executable, and all programs designed to run on windows needs to have one.
用BPEL指定的业务流程是完全可执行的，且在符合BPEL的环境间是可移植的。
Business processes specified in BPEL are fully executable and portable between BPEL-conformant environments.
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