基本解釋[經濟學]外反餽式磁放大器詞組短語短語external l feedback magnetic amplifier 外反餽式磁放大器external crack feedback magnetic amplifier 外反餽式磁放大器external feedback type magnetic amplifier 外反餽形磁放大器external feedback magnetic amplifier更多詞組專業(yè)釋義經濟學外反餽式磁放大器