When British Petroleum sets the pricefor its Alaskan crude oil, it uses an estimated demand model, both forgasoline consumers and also for the refineries to which BPsells.
英国石油为他在阿拉斯加原油定油价的时候，他用到了一个评估模型，用于汽油消费者和英石油所买的提炼油。
The fourth part analyses the competition state in readymade oil enterprise and customer's demand, and sets up a customer demand model in the readymade oil market.
第四部分对成品油销售企业竞争状况以及顾客需求进行了详尽的分析，并构建出成品油终端市场顾客需求模型；
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