1)Common Emitter Forward Current Transfer Ratio,射极接地电流放大率2)grounded emitter amplifier,射极接地放大器3)grounded-emitter amplifier,发射极接地放大器4)grounded base amplification circuit,基极接地放大电路;共基极放大电路5)grounded-collector amplifier,集电极接地放大器6)current amplification degree,电流放大率
