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混流式水轮机适用水头20-200米。该机型均有蜗壳装置，使水流在蜗壳中运动有较好流态，效率较高，结构较简单，运行可靠，适合于中高水头，较大的的水电站。
Francis Turbine ：
Francis turbine is widely used in hydro power stations with the head of 20--200 meters. It has a snail - shell structure that can make water in it flow easily and smoothly. Therefore, it is regarded as a type of turbine with high efficiency. Although it looks simple, it works well
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