soft frequency tracing 软频率跟踪
automatic frequency tracing system 自动频率跟踪系统
tracing frequency for adjusting speed 变频跟踪调速
frequency-tracing measurement 频率跟踪测量
fixed switching frequency current tracing control 恒频电流跟踪控制
Middle frequency-frequency convertor 中频变频器
audio frequency and video frequency processing 生物燃料电池; 音频和视频处理
Belgium OSB double frequency(work-intermediate frequency) Queching machine 比利时OSB双频(工中频)感应淬火机
correlation in frequency domain and frequency domain 时频相关性
cyclic frequency-spectrum frequency domain 循环频率-谱频率域
deteeting the ground point with low frequency electric current signal changing its frequency 低频信号变频探测
double frequency(low intermediate frequency) Queching machine 共昌双频(低中频)感应淬火机
flashing frequency, critical flicker frequency 临界闪变频率; 停闪频率
FMVFT Frequency Modulated Voice Frequency Telegraph 调频音频电报
Frequency Conversion to Working Frequency 变频转工频
frequency error Frequency 循环频率差
frequency pushing and frequency pulling 频率推挽
frequency-rising and frequency-falling 升降频
FSVFT Frequency Shift Voice Frequency Telegraph 移频音频电报