为了使陀螺罗盘做得准确，很明显有必要使垂直轴干扰力矩减小到很低。
In order for a gyrocompass to be accurate it is obviously necessary to hold spurious vertical torques to an extremely low level.
文章概述了磁通门现象及磁通门系统的构成，具体介绍了二轴磁通门、罗盘的原理、电路及在导航系统中的应用方法。
This paper summarizes flux-gate phenomenon and its composition, and concretely introduces the principle, circuit and applying method in guidance system of pendulum biaxial flux-gate compass.
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