... irregular movement 不规则运动 irregular near-surface 不规则近地表 irregular parting 不规则裂理 ...
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Reflections are impaired by interferences, especially irregular topography and low velocity layer when they travel through near surface.
反射波在经过近地表的过程中受到诸多因素的干扰，尤其是地表起伏和近地表低降速带，对其影响甚大。
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