继电器铁心

relay core的用法和样例：

例句

In order to discover the nature of such kind reactors, this paper embarks on the study of a foil-wound reactor with a columniform core.为了研究带铁心箔式线圈的特性，本文深入研究了带圆柱铁心的箔式电抗器。
When pre-compression is loose the winding vibration acceleration will enlarge.On the other hand, the principle of core magnetostriction and its influencing factors are presented.从磁体物理学的概念出发，本文分析了引起铁心振动的磁致伸缩的原理以及影响因素。

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