supply channel - target slump
- surface-tooled stone
- surface-type air cooler
- surface-type vibrator
- surface-water drain
- surfaced timber
- surfacer
- surfacing
- surfactant
- surge
- surge bin
- surge chamber
- surge drum
- surge hopper
- surge pipe
- surge regulator
- surge shaft
- surge tank
- surge tower
- surging
- surging well
- surplus
- surplus flow
- surplus heat
- surplus pressure
- surplus sludge
- surplus water
- surrender of know-how
- surrogate analysis
- surrounding air
- surroundings
- surveillance
- surveillance and alarm service
- survey
- survey and research works
- survey flying
- survey mapping
- survey marker
- survey monument
- survey operations
- survey plan