Technical drawings - simplified representation of pipelines - terminal features of ventilation and drainage systems 技术制图.管道的简化表示法.第3部分:通风和排放系统终端部件
2.
Technical drawings . simplified representation of pipelines . part 3 : terminal features of ventilation and drainage systems 技术制图.管道的简化表示法.第3部分:通风和排放系统终端部件
3.
Technical drawings - simplified representation of pipelines - part 3 : terminal features of ventilation and drainage systems 技术制图.管道的简化表示法.第3部分:通风和排水系统的终端部件
4.
Technical drawings - simplified representation of pipelines - terminal features of ventilation and drainage systems ; identical with iso 6412 - 3 : 1993 技术制图.管道的简化表示法.第3部分:通风和排水系统