The peasants' load, result of social division and cooperation of labor, is an objective historical phenomenon along side with the progress of the society.
It can be reflected not only by the divisionof container load center and lateral container port but also the construction of network of container transportation.
这种改变不仅体现在集装箱枢纽港和支线港的分化，而且体现在集装箱运输内陆网络体系的建设上。
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In addition, impedance is important to achieve a proper loaddivision in the parallel operation of transformers.