影响运输成本的主要因素是距离和竞争。
The primary factor to influence transport cost is distance and competition.
它具有结构简单、成本低、运输距离长、效率高的优点。
It is simple in structure, low cost, long distance transport, high efficiency advantages.
它具有结构简单、成本低、运输距离长、效率高的优点。
It is simple in structure, low cost, long distance transport, high efficiency advantages.
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