物流是有形物品从产出源点到最终消费点的流动储存活动。
The flow of commodities is the flow and store activity of tangible goods from the original place of production to the final consumption place.
此外，沼气生产地点的位置和消费点，可以在不同的领域。
Besides, biogas production place location and consumption point can be in different areas.
典型的城市公用事业通过管道网络传输系统，从生产地向特定的消费点提供混合商品。
Typical urban public utilities provide mix goods from productive spots to specific consumers through pipeline network transmission system.
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