clas - coin
- closed system
- closed v loop
- closed-circuit installation
- closed-die coining
- closed-die explosive forming technique
- closed-die forging
- closed-die method
- closed-die process
- closed-die tapping
- closed-die technique
- closed-loop recirculation system
- closed-shell atom
- closed-system separator
- closed-tolerance forging
- closed-top furnace
- closed-topped housing
- closeness of grain
- closeness of packing
- closing
- closing cylinder