新型电缆护线拖链结构更加合理。
配合物10为不含第二配体的一维链结构。
供应链结构的优化实质是供应商数量的选择问题。
The problem of structure optimization in supply is essentially how to determine the supplier number.
供应链结构的优化实质是供应商数量的选择问题。
The problem of structure optimization in supply is essentially how to determine the supplier number.
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