1. 磁偏角：可是因为这是我们应用上的必要讯息,所以.......打电话问Garmin,他们的工程师比较专业一点,直接了当的说SiRF Star III不支援磁偏角(Magnetic Variation)不晓得有哪位GPS达人知道新的GPS Receiver,
2. 磁变：404 磁阻尼器 magnetic damper | 405 磁变 magnetic variation | 406 磁楔(单面电焊) magnetic wedge
3. [地物]磁变：selective hydrogenation 选择加氢 | magnetic variation [地物]磁变 | chamfering 倒角, 切角, 倒棱, 切面, 削角
4. 磁差：magnetic variation curves 磁差曲线 | magnetic variation 磁差 | magnetic variation 磁差;磁变化
noun
1. the angle (at a particular location) between magnetic north and true north
Synonym: magnetic declination variation