侧音测距系统的最大无模糊距离受到侧音信号最低频率的限制。
The unambiguous distance of tone ranging system is limited by the lowest frequency of tone.
水路运输可以最低的成本运送最大量的商品至最远距离。
Water transport can carry the greatest amount of goods for the longest distance with the lowest cost.
结果对不同的距离，可以采用不同的冷藏设备，以最低的运输成本，达到销售利润最大化。
Results For different distance, can adopt different refrigeration equipment, to the lowest transportation cost, achieve sales profit maximization.
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