Home / Standards / GB/T 33672-2017 GB/T 33672-2017 Active Cavity Ring-Down Spectroscopy system for measurement of atmospheric methane 大气甲烷光腔衰荡光谱观测系统 Standard Type GBT ICS 07.060 CCS A47 Status 现行 Issue Date 2017-05-12 Implementation 2017-12-01 Responsible Dept 中国气象局 Drafting Unit N/A