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1. 磁针：168 主无线电信设备 main radiotelegraph installation | 169 磁针 magnetic needle | 171 主甲板 main deck
2. 磁针,指南针=>磁針：magnetic near-field measurement ==> 近傍磁界測定 | magnetic needle ==> 磁针,指南针=>磁針 | magnetic needle compass ==> 磁针罗盘
3. 针形磁铁：magnetic iron oxide 磁性氧化铁 | magnetic needle 针形磁铁 | magnetic permeability 磁导率
4. 磁：magnetic meridian 磁子午线 | magnetic moment 磁矩 | magnetic needle 磁
noun
1. a slender magnet suspended in a magnetic compass on a mounting with little friction
used to indicate the direction of the earth's magnetic pole