自然垄断的特征与规模经济、范围经济、网络经济和沉没成本有着紧密联系，但其根本特征是成本的劣加性。
The natural monopoly is mainly shown as economies of scale, economies of scope, economies of network and sunk cost, etc, but its basic characteristic is the subadditivity of cost.
自然垄断的特征与规模经济、范围经济、网络经济和沉没成本有着紧密联系，但其根本特征是成本的劣加性。
The natural monopoly is mainly shown as economies of scale, economies of scope, economies of network and sunk cost, etc, but its basic characteristic is the subadditivity of cost.
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