下面附上西门子帮助文件中的介绍
You can build stock and structural feature libraries based on international industry standards.
NX provides the following categories of industry-standard parts and stock for structural members and features:
EN-DIN
AISC
JIS
You can use the sample parts and stock in these libraries as supplied, or customize them to build your own libraries.
After you designate a standard for your structure design, NX displays only the parts and stock for that standard's library when you create members and structural features.
Library definition file The library definition file delineates the standards categories available in 结构设计:
<StructureDesignLibrary version="1">
<Libraries>
<Library name = "EN-DIN"/>
<Library name = "AISC"/>
<Library name = "JIS"/>
</Libraries>
</StructureDesignLibrary>
These entries appear in the 结构设计 customer defaults and preferences.
By default, the library definition file is located at: %NX_STRUCTUREDESIGN_DATA_DIR%\library\LibraryDef.xml
You can accept this default or provide your own file and location.
To add a standard to the library, insert a new entry for it in the library definition file:
<StructureDesignLibrary version="1">
<Libraries>
<Library name = "EN-DIN"/>
<Library name = "AISC"/>
<Library name = "JIS"/>
<Library name = "[NEW ENTRY]"/>
</Libraries>
</StructureDesignLibrary>
Library spreadsheets for standards Each standard in the library definition file must have a corresponding data page set up for it in the library spreadsheet. Each page in the library spreadsheet registers the stock and structural features available in the standard, and points to a specific standards folder in the library.
By default, the library spreadsheet is located at: %NX_STRUCTUREDESIGN_DATA_DIR%\library\SectionReg.xlsx