Home / Standards / GB/T 8499-1987 GB/T 8499-1987 Active Earth-moving machinery--Method for locating the centre of gravity 土方机械 测定重心位置的方法 Standard Type GBT ICS 53.100 CCS J85 Status 现行 Issue Date 1987-12-29 Implementation 1988-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A