Anh
change over
frequency change over
Đức
Frequenzumschaltung
Umschaltung
Pháp
changement
changement de fréquence
change over,frequency change over /SCIENCE,ENG-ELECTRICAL/
[DE] Frequenzumschaltung; Umschaltung
[EN] change over; frequency change over
[FR] changement; changement de fréquence