... code bar drive magnet 编码条驱动磁铁; 电码条驱动磁铁; 码条驱动磁铁 a bar magnet 一条磁铁 bar magnet 磁棒，条形磁铁。 ...
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Move a bar magnet near one or two coils to make a light bulb glow.
在一两枚硬币附近移动磁棒来让灯泡发光。
The magnetic state of a bar magnet or a horseshoe magnet is extremely complicated.
条形磁铁或马蹄形磁铁的磁态是极其复杂的。
The Earth's magnetic field is roughly like that of a bar magnet, with two opposite poles.
地球的磁场大致就像是一块拥有两个磁极的磁铁。
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