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| compass swing; compass swinging (计算并修正飞机磁场对磁罗盘影响的程序。当飞机飞行在指定区域，且所有设备正常工作时,在各个航向测量罗盘偏差并修正，然后应用于罗盘。如果还有剩余偏差，需制作罗盘校正卡。在经过大的组件更换、大修、或重新定位在相差很大的纬度上时，就需定期测定罗盘误差。当罗盘经飞行校正后，其精度达到最高) | |||
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