Home / Standards / GB/T 5597-1999 GB/T 5597-1999 Active Test method for complex permittivity of solid dielectric materials at microwave frequencies 固体电介质微波复介电常数的测试方法 Standard Type GBT ICS 31-030 CCS L90 Status 现行 Issue Date 1999-05-19 Implementation 1999-12-01 Responsible Dept 工业和信息化部（电子） Drafting Unit N/A