Which material can be used for the burs?
举一反三
- Which material can be used for the drill handle?
- __________ this material can be used in our factory has not been studied yet.
- Which of the following can be used for the pulverization of valuable fine drugs A: Dry grinding B: Wet grinding C: Cluster material crushing D: Pulverize separately E: Fluid lapping
- A ferromagnetic material, which is hard to magnetize and demagnetize, could be used as a computer memory material.
- Which one can be used as conclusions（）