以下为句子列表：
英文: The investigation shows the performance gets quite insensitive to the prewhirl angle of IGV as the stagger angle of diffuser vane is reduced to the minimum 7°; the combination of these two stators enables to greatly improve the compressor efficiency over
中文: 研究表明：扩压器进口安装角最小值为7°时，压缩机性能对进口导叶预旋角不敏感；采用不同的扩压器进口安装角和不同进口导叶预旋角匹配调节时，压缩机所能达到的最高效率为86.0%，比单独调节进口导叶预旋角或扩压器进口安装角所能达到的效率高2%。
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