Home / Standards / GB/T 11297.9-2015 GB/T 11297.9-2015 Active Test method for dielectric tangent of loss angle of pyroelectric materials 热释电材料介质损耗角正切tanδ的测试方法 Standard Type GBT ICS 31.020 CCS L90 Status 现行 Issue Date 2015-12-31 Implementation 2016-07-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A