射频频谱学
radio-frequency spectroscopy
化学地层学划分
chemostratigraphy division
低频频谱分析仪
LF frequency spectrum analyzer
高分辨率低频频谱分析仪
high resolution LF frequency spectrum analyzer
高频频谱分析仪
HF frequency-spectrum analyser
射频谱学
radio frequency spectroscopy
声频频谱记录仪
sonic frequency spectrum recording meter
声频频谱仪
audio-frequency spectrometer
双通道数字式低频频谱分析仪
double-channel digital low-frequency spectrum analyzer