door leaf - driven shell pile
- double-elbow pipe
- double-end bolt
- double-end wrench
- double-ended flat spanner
- double-ended open spanner
- double-ended open-jawed spanner
- double-ended stud
- double-ender
- double-face nailing
- double-face wall
- double-flanged
- double-flanged taper
- double-fork
- double-frame roof
- double-girder gantry crane
- double-girder overhead crane
- double-glass pane
- double-glass unit
- double-glazed
- double-glazed window
- double-glazing window
- double-handed
- double-head nail
- double-head wrench
- double-headed nail
- double-headed rail
- double-hinged arch
- double-hung sash window
- double-hung window
- double-intersecting truss
- double-iron plane
- double-joisted floor
- double-lap riveted joint
- double-latticed
- double-lay rope
- double-layer
- double-layer reinforcement
- double-leaf gate
- double-leaf swing bridge
- double-lift cam