Home / Standards / YS/T 42-1992 YS/T 42-1992 Abolished 钽酸锂单晶 Standard Type YS ICS N/A CCS N/A Status Abolished Issue Date 1992-03-19 Implementation 1993-03-01 Centralized Committee 中国有色金属工业总公司 Issuing Authority 中国有色金属工业总公司