Home / Standards / GB/T 17863-2008 GB/T 17863-2008 Active Determination of thorium in thorium ores 钍矿石中钍的测定 Standard Type GBT ICS 27.120.30 CCS F46 Status 现行 Issue Date 2008-07-02 Implementation 2009-04-01 Responsible Dept 国家标准委 Drafting Unit N/A