每个螺线管回路的一半都换成了铝卡，其中嵌入了细小的维卡合金棒形磁铁。

One-half of each solenoid loop was replaced with an aluminum card into which tiny vicalloy bar magnets were embedded.

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棒形或马蹄形磁体称为永磁体。

A bar on horseshoe magnet is called a permanent magnet.

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显示窗上的棒形指示灯即显示所选的设定。

The bar indicator on the display window shows the selected setting.

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