Rocket guidance unit e steam locomotive: o que têm em comum

1. Passo 1. Rocket guidance unit — faz parte de — R-7 rocket. A gyroscopic guidance system.
2. Passo 2. R-7 rocket — tem como parte — Liquid-propellant rocket engine. RD-107 and RD-108 engines.
3. Passo 3. Liquid-propellant rocket engine — tem como parte — De Laval nozzle. A nozzle.
4. Passo 4. De Laval nozzle — evoluiu de — Steam turbine. De Laval invented the nozzle for a steam turbine.
5. Passo 5. Steam turbine — evoluiu de — Watt steam engine. The turbine replaced piston engines in large installations.
6. Passo 6. Watt steam engine — faz parte de — Steam locomotive. A steam locomotive is driven by a steam engine.

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