对于不同货物类型的单车装载问题，优先考虑其主要约束目标，而对其他目标则适时调整。
To different types, its main constraint is taken into account firstly, and the other constraints are adjusted in time.
对于不同货物类型的单车装载问题，优先考虑其主要约束目标，而对其他目标则适时调整。
To different types, its main constraint is taken into account firstly, and the other constraints are adjusted in time.
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