适当提高乳化液浓度越高会降低轧制力,因此乳化液浓度越高越好()
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Empirical studies show that the process of SLA is a process of constructing and modifying rules of communication.()
According to the "principles-and-parameters" theory, "principles" refer to highly abstract properties of grammar which are applied to language in general and which generate phrases and at the same tim
碳素钢中含有的六种元素为铁、碳、硅、锰、硫和磷()