With the increase of the tonnage and power of ocean-going ship, more and more attentions are paid to the match among vessel, main engine and propeller by shipping and shipbuilding world.
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.
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。
3
The relation of tonnage to grade in the deposit is subject to exponential function, rather than power function.