Pot lid et rolling mill : ce qu'ils ont en commun
- Étape 1. Pot lid — fait partie de — Saucepan. A cap.
- Étape 2. Saucepan — a évolué de — Pottery. The first pots were ceramic.
- Étape 3. Pottery — utilise — Potter’s wheel. The wheel made shaping vessels faster and more even.
- Étape 4. Potter’s wheel — fonctionne comme — Wheel. A potter’s wheel is a spinning disc; it is sometimes seen as a forerunner of the transport wheel.
- Étape 5. Wheel — comprend — Water wheel. A water wheel is a wheel with paddles turned by flowing water.
- Étape 6. Water wheel — est utilisé dans — Rolling mill. The first mills were turned by water.
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