以下为句子列表：
英文: An optimization design system has been constructed and practically used for centrifugal compressor components and mixed-flow pump impeller.
中文: 目前，已经建立了离心压气机部件及水泵叶轮的优化设计系统，并在工程设计中发挥了重要作用。
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英文: In the aerodynamic optimization design of turbomachine, the approximation model methods enable to balance the computational cost and accuracy, whose successful applications in centrifugal compressor impeller, diffuser, and mixed-flow pump impeller designs
中文: 基于统计学理论提出的近似模型方法有效地平衡了基于计算流体动力学分析的叶轮机械气动优化设计中计算成本和计算精度这一对矛盾，在离心压气机叶片扩压器、叶轮和混流泵叶轮设计等问题中得到了成功应用，展示了广阔的工程应用前景。
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英文: Some advantage caused by spraying water between the stages of centrifugal compressor was attained, and the theory was used successfully in cracking gas centrifugal compressor of the key machine of ethylene cracking facility.
中文: 摘要通过对湿压缩概念的介绍和分析，得出了离心式气体压缩机在级间喷水会带来的多点优势，并将这一理论成功应用于乙烯裂解装置的关键设备―裂解气压缩机。
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英文: The performance of the centrifugal compressor at different diffuser stagger angles and different inlet guide vane (IGV) prewhirl angles are measured.
中文: 摘要对扩压器进口不同安装角和进口导叶不同预旋角匹配下离心压缩机的性能进行了实验研究。
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英文: Two centrifugal compressor impellers with different meridional shape and blade angle were designed using computer-aided integrated design systems.
中文: 摘要采用离心压气机计算机辅助集成设计系统，设计了两个不同子午形面和叶片角的离心压气机叶轮。
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