煤矿机械技术文件用图形符号 露天矿机械图形符号
Graphical symbols for use in technical documentation of coal mine machinery--Graphical symbols for surface mine machinery
标准状态
发布于:2000-03-16
实施于:2000-12-01
已废止
Graphical symbols for use in technical documentation of coal mine machinery--Graphical symbols for surface mine machinery