Ice house e fole: o que têm em comum

1. Passo 1. Ice house — é feito de — Stone. Ice houses were built of stone and sunk into the ground.
2. Passo 2. Stone — é material para — Alto-forno. The shaft of a blast furnace is stone.
3. Passo 3. Alto-forno — tem como parte — Fole. Air was blown in by bellows, later by blowers.

Abrir Evothings