磨煤机耐磨件堆焊技术导则
Technical guide for wear resistant parts of coal pulverizer
2015-07-01
GB/T 18024.6-2010
煤矿机械技术文件用图形符号 第6部分:露天矿机械图形符号
Graphical symbols for the technical documentation of coal mine machinery - Part 6:Graphical symbols for surface mine machinery