Home / Standards / HG/T 2439 HG/T 2439 落球回弹测定仪技术条件 落球回弹测定仪技术条件 Standard Type HGT ICS 71.120.99 CCS G98 Status N/A Issue Date 2011-12-20 Implementation N/A Responsible Dept 发布日期:1993-06-14 Drafting Unit N/A