Home / Standards / GB/T 38439-2019 GB/T 38439-2019 Active Measuring specifications for methods to obtrusive light of outdoor lighting 室外照明干扰光测量规范 Standard Type GBT ICS 29.140.99 CCS K70 Status 现行 Issue Date 2019-12-31 Implementation 2020-04-01 Responsible Dept 国家标准委 Drafting Unit N/A