Home / Standards / GB/T 17764-1999 GB/T 17764-1999 Abolished Principles of construction and adjustment of glass hydrometers 玻璃浮计式密度计的结构和校准原则 Standard Type GBT ICS 71.040.10 CCS N64 Status 废止 Issue Date 1999-05-28 Implementation 1999-12-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A