针对有线电视网双向改造的需要，设计了一种电路简洁、性能优良、成本低廉的双向放大器。
Aimed at the need of CATV network bi-directional transform, designed a kind of bi-directional amplifier with succinct circuit, cheap cost.
研究了一种新型直流电流比较仪，它包括两个环节：双向自饱和磁放大器和双铁芯自饱和磁放大器。
A new type of DC current comparator is researched which includes two parts: a bidirectional self saturating magnetic amplifier and a two care self saturating magnetic amplifier.
对双向抽运拉曼光纤放大器（RFA）的噪声特性、增益饱和及抽运功率转换效率进行了详细研究。
The noise, gain saturation and pump power conversation efficiency of bidirectionally pumped Raman fiber amplifier (RFA) are investigated in detail.
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