Its moving iron core transformer structure is most widely used 动铁芯式变压器结构，应用最广。
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Closed - core transformer 闭心式变压器
3.
Toroidal core transformer 环芯变压器
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The characteristics and advantages of three dimensional wound core transformer are introduced . its characteristis are compared to ones of laminated core transformer 摘要介绍了立体卷铁心变压器的优点和特性，并与叠铁心的变压器性能进行了对比。
