Caixa de som portátil e nuclear reactor: o que têm em comum

1. Passo 1. Caixa de som portátil — tem como parte — Lithium-ion battery. A lithium-ion battery.
2. Passo 2. Lithium-ion battery — evoluiu de — Lead–acid battery. The lithium-ion battery is the next generation of rechargeable chemical current sources, with higher specific energy.
3. Passo 3. Lead–acid battery — faz parte de — Submarine. Underwater, electric motors run on batteries.
4. Passo 4. Submarine — evoluiu para — Nuclear submarine. Nuclear power let submarines stay submerged for months.
5. Passo 5. Nuclear submarine — tem como parte — Nuclear reactor. A reactor.

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