纵向自差校正磁铁的英文

fore and aft corrector

fore and aft magnet

fore-and-aft corrector

fore-and-aft magnet

• 纵向:    direction; machine ...
• 自差:    autodyne; autohete ...
• 校正:    check; correction; ...
• 磁铁:    magnet; ferromagne ...