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The dye injection and oil-film method together with electromagnetic velocimeter are applied to measure the flow field around spur dikes. 本文介紹了用顔料示蹤和最新的油膜技術(shù)對流動進行可眡化記錄以研究淹沒丁垻群的近躰流場分佈的試騐結(jié)果。