Screw-cutting lathe e submarine: o que têm em comum

1. Passo 1. Screw-cutting lathe — utiliza — Screw thread. The lathe cuts precise standard threads.
2. Passo 2. Screw thread — faz parte de — Tourniquet. Petit’s tourniquet was tightened with a screw.
3. Passo 3. Tourniquet — é feito de — Leather. The strap of a tourniquet is leather.
4. Passo 4. Leather — é material para — Submarine. It was covered with leather.

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