为了装卸效率，在罐，瓶，箱或形式的产品通常合并成较大的单位。

To facilitate handling efficiency, products in the form of cans, bottles, or boxes are typically combined into larger units.

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分别对总成本、单位成本、分货种装卸成本和内外贸货物装卸成本进行了分析。

The analysis includes total cost, unit cost, loading and unloading costs in terms of cargo category and that in terms of domestic and outbound cargo in this chapter.

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