帮忙翻译一段话，经济学方向，谢谢。

Hotelling model of the framework, constructed based on consumer purchase history of discrimination pricing model to study the differences between market forces duopoly manufacturers A, B pricing strategy. Based on consumers when purchasing their first choice, the two manufacturers in the consumer can purchase the second time when discrimination pricing. However, with the two companies implemented price discrimination can not be compared to the situation, this discriminatory pricing so that each consumer welfare increase due to each vendor's profit lower.

双寡头竞争:Duopoly competition
品牌忠诚者:Brand loyalty

Using the Hotelling model's frame, constructs purchases historical based on the consumer the discrimination fixed price model, inspects the market force existence difference double oligarch manufacturer A, the B fixed price strategy. Based on the consumer first purchase's when choice, two manufacturers may when the consumer second purchase carries on the