subs - taxi
- surface integral
- surface integral equation
- surface ionization
- surface ionization engine
- surface ionization thruster
- surface irregularity
- surface irrigation
- surface jar
- surface junction
- surface lap
- surface laser
- surface layer
- surface layout
- surface leaching
- surface leakage
- surface level
- surface load
- surface loading capacity
- surface map
- surface marking
- surface mat
- surface measuring equipment
- surface melting
- surface migration
- surface mine
- surface mining
- surface mobility
- surface modification
- surface morphology
- surface mounting
- surface notch
- surface nucleation
- surface of action
- surface of failure
- surface of revolution
- surface of rupture
- surface orientation
- surface outlet
- surface passivation
- surface passivation technique