Specification on investigation of natural building material for water conservancy and hydropower engineering
文件类型:
PDF格式
文件大小:
513 KB
资料归类:
行业标准
整理时间:
2000-11-19
软件简介:
标准编号:SL 251-2000 标准名称:水利水电工程天然建筑材料勘察规程 英文名称:Specification on investigation of natural building material for water conservancy and hydropower engineering