这些电池部件到底有多小呢？

How small are these battery parts?

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电气系统中第一个主要的部件是电池。

The first main part in the electrical system is the battery.

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蓄电池是汽车种十分重要、必要的部件。

The battery is a very important and necessary part of a vehicle.

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质子交换膜是燃料电池中的关键部件。

Proton Exchange Membrane (PEM) is the key part in the Fuel Cell.

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动力电池是电动汽车的核心部件之一。

Power battery is one of key parts in electrical vehicle.

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蓄电池是电动自行车的核心部件。

The batteries are the key parts of the electric bike.

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燃料电池汽车的关键部件是燃料电池。

Fuel cell is the key component of fuel cell vehicle.

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燃料电池汽车的关键部件是燃料电池。

Fuel cell is the key component of fuel cell vehicle.

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