twin-T network 双T网络 ; 双T形网络
twin T-network 双T形网络
twin-t frequency selection network 双t选频网络
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Aiming at actual instance that the frequency of electric network is waving, based on twin-T resistance-capacitance active-trap filter, a trap filter which can filter the power interference between 49.
针对电网频率波动的实际情况，基于双t型阻容有源陷波电路，设计了可以滤除频带在49。
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