Y structure and function, BLSS can be divided into two parts: autotrophic unit and heterotrophic unit.

LSS在结构和功能上可以分为自养单元和异养单元两部分。

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The paper also makes an analysis of characteristics and structures of Bus-based Logistics Systems(BLSs) and discusses their implementation for the chain enterprise.

最后，对总线型物流系统在连锁企业中的实现进行了研讨。

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