目前，由于船舶吨位的不断增加以及柴油机—电力推进船舶的不断涌现，使船舶电站发电机的容量越来越大。

At present, with the increasing tonnage of ship and more and more ships propelled by electric power, the capacity of a generator in a Marine power station is getting larger and larger.

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此外，随着大型变电站的负荷增长，变压器的容量也必须增加。

Furthermore, as the load on a large substation grows, transformer capacity has to BE added.

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