保密: keep a secret density倒: reverse频: frequent电路: circuit; electric circuit; e ...保密倒频系统: privacy inverter system倒频保密电路: scrambler circuit倒频电话: scrambled telephony保密器倒频器: scramlber倒频保密设备: frequency inversion privacy equipment声频电路,音频电路: audio-circuit扰频器倒频器保密器: scrambler倒频: scramble; scrambling倍频电路: frequency doubling circuit; frequency multiplier circuit变频电路: frequency changing circuit; frequency converting circuit差频电路: differential frequency circuit单频电路: single frequency circuit导频电路: pilot channel; pilot circuit; pilotcircuit低频电路: low-frequency channel分频电路: counting down circuit; crossover circuit; divider circuit; frequency dividing circuit; frequency-halving circuit高频电路: high frequency circuit; high-frenquency circuit; high-frequency channel; radio frequency channel; radiocircuit高频电路板: high-frequency circuit board话频电路: voice frequency circuit混频电路: mixer circuit; mixing circuit鉴频电路: discriminator circuit; frequency discriminating circuit; frequency discrimination circuit扰频电路: scrambler circuit
