QO1型高频小功率晶体三极管fT计量标准装置(试行)QO1型高频小功率晶体三极管fT计量标准装置(试行)Specification for verification of Q01 model high frequency low power triode transistor Ft standard measurement meters
QG21-QG25型高频小功率晶体管fT测试仪(试行)
Trial specification for verification of QG21-QG25 high frequency low-power transistor F testers
JJG (电子) 04020-1989
高频中小功率晶体三极管噪声系数计量专用样管(试行)
Specification for verification of sample transistor specially intended to measure the noise factor of high frequency medium and low power triode transistor