The key reason for the improved performance are the pairs of counterrotating swirls created at either side of the leading-edge bumps, called tubercles.
隆起前缘能增进性能的关键理由，
在这些隆起节瘤的两侧，
产生成对的反向旋转涡
。
The key reason for the improved performance are the pairs of counterrotating swirls created at either side of the leading-edge bumps, called tubercles.
隆起前缘能增进性能的关键理由，在这些隆起节瘤的两侧，产生成对的反向旋转涡。
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