volume of rail freight

• 货运量

volume of rail freight的用法和样例：

例句

1. The port handles about 90 per cent of Hong Kong's trade,by weight.
   经由港口处理的货运量，以重量计算约占本港贸易总额的九成。
2. The model overcomes the unpredictability due to monotonicity and periodical fluctuation of freight volume.
   该模型克服了货运量的单调性和周期波动性给预测带来的困难。