Home / Standards / GB/T 17764-2008 GB/T 17764-2008 Active Hydrometers - Principles of construction and adjustment 密度计的结构和校准原则 Standard Type GBT ICS N/A CCS A80 Status 现行 Issue Date 2008-09-18 Implementation 2009-05-01 Responsible Dept 国家标准委 Drafting Unit N/A