weight cube ratio

reduction ratio / gear ratio

Voltage Standing Wave Ratio (VSWR) / voltage standing-wave ratio

jam to signal ratio (J/S ratio)

power-to-weight ratio

thrust-to-weight ratio

weight-horsepower ratio

weight-strength ratio

reheat thrust-to-weight ratio

combat-loaded weight / combat loaded weight

weight to correct weight

basic weight / dry weight

basic weight plus fuel / wet weight

dry weight / basic weight

wet weight / basic weight plus fuel

maximum take-off weight / maximum takeoff weight (MTOW)

aspect ratio

fighter-to-administrative personnel ratio

high expansion-ratio

mass ratio

signal-to-noise ratio (SNR; S/N)

damping ratio

attenuation ratio

base pressure ratio

depression ratio

explosion ratio

infantry-armor ratio

forward gear ratio

fuel-air ratio

fuselage fineness ratio

compression ratio

engine pressure ratio (EPR)

excess air ratio