稳频器

置有高周波频率稳定器和高周波漏磁压制器,此装置能免除电波的漏出以免干扰别的电子装置,像电视机、收音机等。

audio-frequency push-pull ampli-fier

micro wave all-pictrue frequency spectrum analyzer

relative frequency

Debye frequency【物】

frequency beating

３０赫－２０千赫\nacoustic frequency【声】;audible frequency【声】;audio frequency【声】

frequency of occurrence of speech sound【声】

high frequency positive pressure ventilation, HFPPV