Home / Standards / GB/T 11311-1989 GB/T 11311-1989 Active Test methods for the properties of piezoelectric ceramics--Test for Poisson’s ratio σE 压电陶瓷材料性能测试方法 泊松比σE的测试 Standard Type GBT ICS 31.140 CCS L32 Status 现行 Issue Date 1989-03-31 Implementation 1990-01-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A