过: cross; pass频: frequent保: defend; protect过频: overfrequency过频率: overfrequency过频偏: overdeviation欠频保: underfrequency protection超过频率: overfrequency排粪过频: pollakicoprosis月经过频: epimenorrhea; polymenorrhea; proiomenorrhea超高频保护: ultra-high frequency protection高频保安器: high frequency protector高频保护: carrier-current protection; high frequency protection; high-frequency protection射频保护率: radio frequency protection ratio声频保护比: audio frequency protection ratio声频保护率: audiofrequency protection ratio声频保真度: audio fidelity视频保护带: video guard band视频保护率: video protection ratio音频保护比: af protection ratio音频保护率: af protection ratio音频保真度: af audio fidelity; audio fidelity月经过频过多: epimenorrhagia声频保真度,音频保真度: audio-fidelity倒频保密电路: scrambler circuit
