Home / Standards / GB/T 35234-2017 GB/T 35234-2017 Active Specifications for surface meteorological observation—Frozen soil 地面气象观测规范 冻土 Standard Type GBT ICS 07.060 CCS A47 Status 现行 Issue Date 2017-12-29 Implementation 2018-07-01 Responsible Dept 中国气象局 Drafting Unit N/A