Truss e electrical telegraph: o que têm em comum

1. Passo 1. Truss — faz parte de — Truss bridge. Trusses.
2. Passo 2. Truss bridge — utiliza — Railway track. Railway bridges.
3. Passo 3. Railway track — inspirou — Time zones. Introduced because of railway timetables.
4. Passo 4. Time zones — utiliza — Electrical telegraph. Synchronizing time by telegraph.

Abrir Evothings