这一问题基本的结构性原因在于，信息产品的特点就是固定成本高，而边际成本低。
The basic structural reason for this problem is that information products are characterised by high fixed costs and low marginal costs.
这一问题基本的结构性原因在于，信息产品的特点就是固定成本高，而边际成本低。
The basic structural reason for this problem is that information products are characterized by high fixed costs and low marginal costs.
网络经济环境中，信息产品普遍具有的高固定成本、低边际成本的特征使得信息产品的定价成为一个困难的问题。
In network economic environment, the information product has generally characteristic of the high fixed cost and the low marginal cost.
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