Meanwhile, the length of time on training sample was determined as the recent complete economic cycle when using artificial neural network for railway freight volume forecasting.
并提出在利用人工神经网络进行铁路货运量预测时，训练样本的时间长度为最近的一个完整经济周期。
The operation of trucks carrying rate of 60%, tractor trailers proportion with up to 1:2, rejection of the turnover in complete hang transportation road freight the proportion of the above 12%.
操作运输率达到60%，拖拉机拖车比例达到1：2，挂车守成交通道路运输的周转比例达到了12%以上。
The operation of trucks carrying rate of 60%, tractor trailers proportion with up to 1:2, rejection of the turnover in complete hang transportation road freight the proportion of the above 12%.
操作运输率达到60%，拖拉机拖车比例达到1：2，挂车守成交通道路运输的周转比例达到了12%以上。
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