doub - dryi
- double acting
- double acting compressor
- double acting cylinder
- double acting engine
- double acting hammer
- double acting piston
- double acting press
- double acting pump
- double acting steam engine
- double angle milling cutter
- double arm robot
- double bank radial engine
- double beat valve
- double block brake
- double caliper
- double callipers
- double chain conveyor
- double column vertical lathe
- double concave lens
- double convex lens
- double crank press
- double cut file
- double cutting planer
- double cylinder
- double cylinder engine
- double deck bus
- double deck coach
- double deck screen
- double drum hoist
- double ended spanner
- double ended wrench
- double expansion engine
- double helical gear
- double helical tooth
- double hook
- double hookes joint
- double housing planer
- double pipe condenser
- double reduction gear
- double roll crusher
