压气机效率有等熵效率 （isentropic efficiency）和多变效率（polytropic efficiency）之分，通常所说的效率多指等熵效率。
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The author carried out the 3D numerical simulation of the rotor generated by the program using the commercial CFD software. The simulation result declared that the rotor had high isentropic efficiency and wide working area.
采用商用计算软件对上述程序设计的动叶进行了全三维的数值模拟,结果显示该动叶具有较高的等熵效率和宽广的稳定工作范围,实际加功量沿叶高分布和预期结果一致,满足设计要求。
参考来源 - 低反动度高负荷吸附式轴流压气机·2,447,543篇论文数据，部分数据来源于NoteExpress
本文重点探讨了膨胀机出口带液量对其等熵效率的影响。
The influence of liquid quantity carried out from the exit of expansion machine upon its isentropic efficiency is emphatically discussed in this paper.
同时介绍利用上述基本热力学数据计算石油天然气膨胀机制冷过程等熵效率；
The basic data thus obtained could be used for the calculation of the isentropic efficiency in the expanding process of natural gas in refrigeration.
优化实例结果显示：某高压涡轮导叶等熵效率从93．88％提高到94．94％，局部区域流动情况得到较大改善，型面匹配更加合理。
The optimization results show that the efficiency changes from 93.88% to 94.94%. Flow situation in several local zones is improved and profile surface matching results are more reasonable.
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