The source of the anomaly may lie in this region rather than in the highpressure film.
反常现象的起源可能在这个区域，而不是在高压油膜区。
PRMF relative phase spectrum IP method with PRMF signal as excitation has the same advantage of relative phase IP method, and offer rich information for the discrimination of anomaly source.
利用伪随机多频信号作为场源的多频相对相位谱观测法拥有相对相位观测法的优点，同时为异常源的区分提供丰富的信息。
This generates ascent as well as negative vorticity source, which corresponds to a strongly anomaly anticyclone center appearing to the north of the heating region.
结果该区域产生了垂直上升运动及负的涡度强迫源，对应着异常强烈的反气旋环流。
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