Twisted rope strands e watt steam engine: o que têm em comum

1. Passo 1. Twisted rope strands — faz parte de — Rope. Twisted bundles of fibre.
2. Passo 2. Rope — evoluiu para — Wire rope. A steel counterpart of rope.
3. Passo 3. Wire rope — faz parte de — Mine hoist. Mine ropes were the first use of wire rope.
4. Passo 4. Mine hoist — tem como parte — Watt steam engine. Steam winding engines.

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