日磁校正 diurnal magnetic correction

磁校正器 corrector magnet ; magnetic compensator

磁通表校验仪 [电磁] fluxmeter calibrator

磁石学校 Magnet School ; Magnet Schools

磁性学校 magnet school

磁力上校 Major Magnet

磁力学校 magnet school

倾斜自差校正磁铁 heeling magnet

磁力校正 magnetic correction

校正磁铁 corrector magnet