传声器声压灵敏度
pressure sensitivity of microphone
传声器声压频率响应
pressure frequency response of microphone
抗噪声传声器
antinoise microphone
noise-cancelling microphone
声频共振
Acoustic frequency resonance
声频频率计
sonic frequency cymometer
凹镜式光频共振器
concave-mirror optical resonator
数字式核磁共振频率-磁场转换器
digital NMR frequency-to-magnetic field converter
安装共振频率
Mounting resonate frequency
磁共振频率
magnetic resonance frequency
弹性模量或共振频率
module of elasticity or resonance frequency