听域下的
infrasonic; subsonic
听域频率
audio frequency
锁定转子频率
locked-rotor frequency
特性频率
characteristic frequency
梯级频率分布图
histogram
天线共表频率
antenna resonant frequency
天线自然频率
natural frequency of an antenna
调速频率倍增器
kilystron frequency multiplier
调谐簧频率计
tuned reed frequency meter
调制频率
modulating frequency; modulation frequency
跳动脉冲重现频率
jiffered pulse recurrence frequ-ency
通用频率因子
universal frequency factor
同步节拍频率
sync tip frequency
同轴频率计
coaxial-line frequency meter
图场频率
field repetition rate
图素频率
picture frequency
图像频率
image frequency
图像频率响应
image frequency response
外差频率
heterodyne frequency
外差频率计
heterodyne frequency meter