可调频率电力驱动 adjustable frequency electric drive

可调频率雷射 laser tunable

可调频率闪光灯 variable frequency photoflash

频率可调 Frequency Adjustable ; Adjustable Frequency

可调节频率装置 Adjustable frequency devices

频率可调性 Frequency tunability ; frequency tunable

可调整讲话频率 Adjustable Speech Frequency

可调谐频率源 tunable frequency source