Ski lift e plough: o que têm em comum

1. Passo 1. Ski lift — tem como parte — Wire rope. A cable.
2. Passo 2. Wire rope — faz parte de — Mine hoist. Mine ropes were the first use of wire rope.
3. Passo 3. Mine hoist — tem como parte — Watt steam engine. Steam winding engines.
4. Passo 4. Watt steam engine — evoluiu para — Tractor. The first tractors were steam-powered.
5. Passo 5. Tractor — utiliza — Steel plough. Ploughing with a tractor.
6. Passo 6. Steel plough — evoluiu de — Plough. A steel share.

Abrir Evothings