The medium-range tilt anomaly was characterized by the violation of the regularity of annual variation. The magnitude of the anomaly may amount to a few seconds and lasted for about half a year.
指出中期异常的特征是破坏年变化规律，异常时间在半年以上，幅度可达几个角秒。
The medium-range tilt anomaly was characterized by the violation of the regularity of annual variation. The magnitude of the anomaly may amount to a few seconds and lasted for about half a year.
指出中期异常的特征是破坏年变化规律，异常时间在半年以上，幅度可达几个角秒。
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