Rotor e piston pump: o que têm em comum

1. Passo 1. Rotor — faz parte de — Electric generator. The rotating part with a magnetic field.
2. Passo 2. Electric generator — tem como parte — Stator. The stationary part with the windings.
3. Passo 3. Stator — faz parte de — Vacuum pump. A cylindrical chamber.
4. Passo 4. Vacuum pump — evoluiu de — Piston pump. Guericke adapted the piston pump to pump out air.

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