Polished limestone casing e rock drill: o que têm em comum

1. Passo 1. Polished limestone casing — faz parte de — Egyptian pyramid. Polished limestone of the outer faces.
2. Passo 2. Egyptian pyramid — é feito de — Stone. The pyramids are built of limestone and granite blocks.
3. Passo 3. Stone — é material para — Lighthouse. The Lighthouse of Alexandria was a stone tower.
4. Passo 4. Lighthouse — tem como parte — Rotation mechanism. It rotates the optics, setting the flash pattern.
5. Passo 5. Rotation mechanism — faz parte de — Rock drill. It rotates the rod between blows.

Abrir Evothings