Truss bridge e hammer: o que têm em comum

1. Passo 1. Truss bridge — utiliza — Railway track. Railway bridges.
2. Passo 2. Railway track — utiliza — Rolling mill. Rails are rolled.
3. Passo 3. Rolling mill — utiliza — Water wheel. The first mills were turned by water.
4. Passo 4. Water wheel — faz parte de — Trip hammer. The shaft was turned by a water wheel.
5. Passo 5. Trip hammer — evoluiu de — Hammer. A trip hammer is a hammer lifted and dropped by a water wheel.

Abrir Evothings