closed-end caisson - commercial iron
- closed-end caisson
- closed-end pipe pile
- closed-loop heat pump system
- closed-type steam heating system
- closely fitting
- closely-spaced joints
- closer
- closer block
- closet
- closet bank
- closet valve
- closing
- closing clasp
- closing device
- closing error
- closing force
- closing gap
- closing hasp
- closing line
- closing parts