subs - taxi
- surface
- surface acceptor
- surface acoustic wave
- surface acoustic-wave device
- surface active agent
- surface air
- surface analyzer
- surface anisotropic etch
- surface anisotropy
- surface antenna
- surface area
- surface arrangement
- surface attemperator
- surface availability of catalyst
- surface avalanche
- surface band
- surface barrier
- surface behavior
- surface blowhole
- surface boiling
- surface borehole
- surface borehole hydraulic mining
- surface breakdown
- surface broach
- surface burning
- surface casing
- surface casing string
- surface channel
- surface charge
- surface chargeability
- surface check
- surface checking
- surface choke
- surface chromatography
- surface circulation
- surface coal handling system
- surface coating
- surface combustion
- surface composition mapping radiometer
- surface compression strengthening