frequency initial velocity method  频率-初速法

initial frequency  初始频率; 起始频率

initial starting of batteries  首次起动

initial starting performance  首次起动性能

SFC frequency starting  SFC变频启动

Starting Frequency  起动频率

Stationary Frequency Starting  静止变频起动

sweep-frequency starting  扫频式起动; 扫频式启动

Variable Frequency Starting  变频起动

Variable Frequency Starting Process  变频起动

Variable-frequency starting  变频起动; 变频启动

variable-frequency starting system  变频起动系统

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