It is true that as the capacity of a manufacturing operation rises,costs per unit of output fall as plant size approaches"minimum efficient scale,"where the cost per unit of output reaches a minimum,determined roughly by the state of existing technology and size of the potential market. 这句话LZ理不清结构,句意也不是很顺畅,请XDJM指点~~作者: james2201 时间: 2012-10-10 21:23