其用途是作为燃料电池阴极催化剂。

The polymer is used as a catalyst for the cathode of a fuel cell.

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卷取机是一种重要的轧钢辅助设备，其用途是把轧制后的成品带钢卷成钢卷。

Coiler is one of the most important assistant equipment for steel rolling.

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卷取机是一种重要的轧钢辅助设备，其用途是把轧制后的成品带钢卷成钢卷。

Coiler is one of the most important assistant equipment for steel rolling. It is used to coil strip into coiled steel.

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