silica gel - sliplining
- single-family house
- single-family permit
- single-flight stairs
- single-floor
- single-fluid cell
- single-grain structure
- single-hand hammer
- single-handled saw
- single-head wrench
- single-headed eagle
- single-hinged arch
- single-hinged arch girder
- single-hinged arched girder
- single-hub pipe
- single-hung window
- single-lane
- single-lane one-way tunnel
- single-lane road
- single-latticed
- single-lay rope
- single-layer panel
- single-layer reinforcement
- single-layer slab
- single-leaf
- single-leaf bascule bridge
- single-leaf gate
- single-lift gasholder
- single-light window
- single-line
- single-line bridge
- single-line clamshell
- single-line drawing
- single-line piping layout
- single-line track bridge
- single-line traffic
- single-lock welt
- single-loop feedback
- single-main distribution
- single-medium bed
- single-member column