compass deflection

短语

词形变化

compass deflections 复数 compass deflections

释义与例句

n.
  1. 1.

    The difference, expressed in degrees, between the direction a magnetic compass needle points and true or astronomical north; magnetic declination.

  2. 2.

    Differences, expressed in degrees, between magnetic north directions and the direction a magnetic compass points, owing to local magnetic interferences; magnetic deviation.