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前言.................................................................................
III
1?范围.................................................................................
1
2?规范性引用文件....................................................................... 1
3?术语和定义........................................................................... 1
4?分类、代号 ......................................................................... 2
4.1按材质分类及代号...................................................................
2
4.2按门扇数量分类及代号...............................................................
2
4.3按结构型式分类及代号 .............................................................
2
4.4按耐火性能分类及代号...............................................................
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