Home / Standards / GB/T 24247-2009 GB/T 24247-2009 Active Calibration and usage of ionization chamber systems for assay of radionuclides 测定放射性核素用电离室系统的校准和使用 Standard Type GBT ICS 27.120.01 CCS F88 Status 现行 Issue Date 2009-06-19 Implementation 2010-02-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委