Unusually high levels of solar activity distorting magnetic fields and even signals from Menwith Hill spy base, near Harrogate, an electronic monitoring station, have also been blamed.
太阳活动异常升高使地球磁场发生扭曲，甚至还使哈罗盖特附近的一处电子监控站、曼威斯山情报基地的信号失真，人们认为这也与赛鸽丢失有关。
To unify the magnetic field level of the whole area in Marine geomagnetism surveying, the base value of the secondary base station must be reduced to the main base value.
海洋磁力测量多站日变改正中，为了使整个测区磁场水平统一，必须以主站为基准对分站日变基值进行归算。
To unify the magnetic field level of the whole area in Marine geomagnetism surveying, the base value of the secondary base station must be reduced to the main base value.
海洋磁力测量多站日变改正中，为了使整个测区磁场水平统一，必须以主站为基准对分站日变基值进行归算。
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