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变压器用途广泛.在各种考试中,常常考查这个知识点.因此在中学阶段,学生必须对其有一个较深刻的理解.为此,本文谈两个问题.
The transformer is widely used. In various examinations, this knowledge point is often examined. Therefore, in the middle school stage, students must have a deeper understanding of it. To this end, this article addresses two issues.