Home / Standards / GB/T 19531.4-2004 GB/T 19531.4-2004 Active Technical requirement for the observational environment of seismic stations--Part 4:Underground fluid observation 地震台站观测环境技术要求 第4部分:地下流体观测 Standard Type GBT ICS 91.120.25 CCS P15 Status 现行 Issue Date 2004-06-21 Implementation 2004-09-01 Responsible Dept 中国地震局 Drafting Unit N/A