通过采用合理的铸造工艺，确保了其叶片型线尺寸精度、转轮表面质量及铸件内部的致密度满足了设计要求。

By adopting appropriate foundry techniques, the accuracy of dimension and shape were ensured. The surface quality and internal density of runner meet the requirements of design.

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水轮机转轮叶片的刚强度与振动特性分析对水轮机的优化设计、稳定运行、防止事故发生等都有重要的理论与实际意义。

Rigidity, strength and vibration analysis are important to the blade of hydrodynamic turbine, both in theoretical and actual fields, such as optimum design, stable operation and damage preventing.

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本文作者定量分析计算由转轮有限叶片数引起的叶片出口相对速度分布状态，并以所获结果提出了改善叶片设计的措施。

The author of this paper analyzes and calculates the relative velocity distribution at the blade exit of runner caused by limited blades and offers the way to improve blade design.

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