Home / Standards / GB/T 38256-2019 GB/T 38256-2019 Active Test method for optical axis parallelism of multiple optical paths 多光路光轴平行性测试方法 Standard Type GBT ICS 17.180.99 CCS L50 Status 现行 Issue Date 2019-12-10 Implementation 2020-07-01 Responsible Dept 中国科学院 Drafting Unit N/A