provision circuitale for switching the frequency range by means of insertion and disinserzione an impedance

• 1. 切换和调节相互并联的频率范围滤波支路的电路装置 [P] . 中国专利： CN1183665C . 2005.01.05
• 2. 切换和调节相互并联的频率范围滤波支路的电路装置 [P] . 中国专利： CN1224276A . 1999-07-28
• 3. provision circuitale for tuning and switching of range d band of a radio frequency resonant circuit [P] . IT1030337B . 1979-03-30

  机译： 提供电路，用于调谐和切换射频谐振电路的d波段

• 4. provision circuitale for an oscillator over ranges of frequency and its use as a stage misce bearer car seesaw [P] . IT999794B . 1976-03-10

  机译： 在频率范围内为振荡器提供电路，并将其用作舞台混合载具跷跷板

• 5. provision circuitale for switches to the resonance frequencies of the same electrical circuits [P] . IT947636B . 1973-05-30

  机译： 为切换到同一电路的谐振频率提供电路

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