Magnetic dip is a measurement of the angle between the（）.
- Ageographic pole and the magnetic pole
- Blubber's line and true north
- Chorizontal and the magnetic line of force
- Dcompass heading and the magnetic heading
问题
Magnetic dip is a measurement of the a
参考解析：
分类：磁罗经与陀螺罗经的使用题库
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