求翻译：双头垄断的重要特征是：这两家厂商相互独立，一家厂商调整其产量或价格，必定会引起市场的变动，也就是影响到对手的销售情况，从而引起对手的反应，反过来影响到首先进行调整的厂商。双头垄断下的厂商价格主要是相互达成协议或默契，以制定一个共同价格，限制产量或瓜分市场。是什么意思？

Duopoly is an important feature: the two companies independent of each other, a company to adjust its output or price, will definitely lead to changes in the market, which is affecting the sales of the opponent, causing the opponent's response, in turn, affect the first adjustment of the manufacture

An important feature of the dual-head monopoly was that the two firms independent of each other, the manufacturers or price adjustments to its production and will certainly arouse market, that is the change affects the opponent in the sales, which in turn caused his opponent's response, in turn, aff

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Important feature of the duopoly is: both companies independent of each other, vendors adjust their output or prices will cause changes in the market, which is affecting the sales of competitors, thereby causing the opponent's reaction, which in turn affect the adjusted first manufacturers. Duopoly

The important characteristic that one pair of heads monopolizes is: These two manufacturers are separate, a manufacturer adjusts its output or price, must know the change of causing the market, that is to influence the rival's sales situation, thus cause the rival's response and influence the manufa