Bar permanent magnet as the main part of the polarized magnetic system is widely used in polarized relay.
条形永久磁铁广泛应用于极化继电器中，是构成极化磁系统的主要组成部分。
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A bar on horseshoe magnet is called a permanent magnet.
棒形或马蹄形磁体称为永磁体。
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模块上移
模块下移
不移动