Home / Standards / GB/T 41485-2022 GB/T 41485-2022 Active Nuclear instrumentation—Geophysical borehole instrumentation to determine rock density 核仪器仪表 地球物理密度测井仪 Standard Type GBT ICS 27.120 CCS F86 Status 现行 Issue Date 2022-04-15 Implementation 2022-11-01 Responsible Dept 国家标准委 Drafting Unit N/A