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- A novel circuit configuration for realizing current-mode second-order allpass/notch and first-order allpass filter using a single four-terminal floating nullor(FTFN) is proposed. 提出了采用单四端浮点零器（FTFN）实现电流模式二阶全通／陷波和一阶全通滤波器新电路。
- At this point, Anji, China, Extreme, the first steam car rental brand gathered four terminal T2, the market is still in the competition for the rental market cultivation period. 至此，安吉、神州、至尊、首汽四大汽车租赁品牌齐聚T2航站楼，争夺尚处于市场培育期的租车市场。
- four-terminal floating nullor (FTFN) 四端浮地零器
- multi-output four-terminal float nullor 多输出四端浮地零器
- Multiple_output Four-terminal float nullor 多输出四端浮地零器
- non reciprocal four terminal network 不可逆四端网络
- equivalent four terminal network 等效四端子网络
- asymmetrical four terminal network 不对称四端网络
- reciprocal four terminal network 可逆四端网络
- Two voltage-mode universal biquadratic filters using positive four-terminal floating nullors (PFTFNs) are presented.Each one of the proposed filters using two PFTFNs. 摘要本文旨在提出两个新型电压模式泛用二阶滤波器，每个滤波器由两个正型FTFN所合成。
- Keywords Current conveyor;Four-terminal floating nullor;Current feedback amplifier;Continuous time integrated filter; 电流传送器;四端浮地零器;电流反馈放大器;连续时间集成滤波器;
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- four-terminal floating nullor 四端浮零器
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
