stretching - supply and exhaust ventilation
- subassemblage
- subassembly
- subback
- subballast
- subbase
- subbuilding drainage system
- subcontract
- subcontract works
- subcontracted tasks
- subcontracting procurement
- subcontractor
- subcontracts department manager
- subcooler
- subcritical
- subcritical flow
- subcutaneous water
- subdiagonal
- subdivided panel
- subdividing partition
- subdivision