clas - coin
- class
- class of crystal symmetry
- classical free electron
- classification
- classification of ores
- classification of powder
- classified powder
- classified scrap
- classifier gate
- classifying
- classifying curve
- classifying cyclone
- classifying screen
- classifying table
- classifying washer
- clausthalite
- claw
- claw crane
- clay barrel
- clay bond
