Drumheads are formed from flat plate by hot pressing with suitable forming dies, and then machining the circumferential welding grooves.

Drumheads are formed from flat plate by hot pressing with suitable forming dies, and then machining the circumferential welding grooves.

Drumheads are formed from flat plate by hot pressing with suitable forming dies, and then machining the circumferential welding grooves.




A ) True
B ) False

Answer: A


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