Meanwhile, experiment results of both 3-d impeller fan and the primary are compared.

实验结果同原叶轮风机的测试结果进行了比较。

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In this paper, the introduced mapping technology for narrow 3-d impeller of centrifugal compressors has been in further researched and some key points have been discussed.

对引进的离心压缩机窄三元叶轮的测绘技术进行了研究；对技术关键点作了探讨，重点介绍了石膏、石蜡灌模及其处理工艺措施。

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This paper introduces a quasi 3-d design method for the blade of the impeller of the mixed-flow pump.

本文介绍了混流泵叶轮叶片一种准三元设计法。

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This paper introduces a quasi 3-d design method for the blade of the impeller of the mixed-flow pump.

本文介绍了混流泵叶轮叶片一种准三元设计法。

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