To measure the horizontal component of geomagnetism, the "bifilar balance method" is used, together with an additional adjustable magnetic field to compensate the geomagnetic field.
采用“双悬线平衡法”，并利用外加可调磁场与地磁水平分量补偿的方法对地磁水平分量进行了测量。
The measurement of horizontal component of the geomagnetic field occupies the important position in a lot of fields.
地磁场水平分量的测量在很多领域占重要地位。
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