Amplitude spectrum ratio
amplitude spectrum ratio method
derivative ratio spectrum
Derivative ratio spectrum method
First derivative ratio spectrum
Ratio spectrum derivative
ratio spectrum derivative UV-spectrophotometry
response spectrum ratio
integrated technologic system based on remote sensing spectrum and airborne radiometric gamma energy spectrum
J-spectrum(JONSWAP spectrum)
axial compression ratio and slenderness ratio
B-C ratio (benefit-cost ratio)
benefit-cost ratio (B-C ratio)