The turbine for the Three Gorges Project is one of the mixed-flow turbines with great changes of operation water head.
三峡电站水轮机是运行水头变幅最大的混流式水轮机之一，其外形尺寸和重量亦是当前混流式水轮机之最。
The hydraulic turbine unit frequently operates under the low water head, exists the questions of unstable operation and cavitation in Mania hydropower station.
满拉水电站水比机组经常处在低负荷下运行，存在着局部空蚀破坏和运行不稳定两大问题。
When system suffers the action such as load fluctuation and head fluctuation, this arrangement has influence on the safety operation of system of water diversion and power generation.
当系统受到外界微小作用，例如负荷扰动、水头波动等，都对水电站安全稳定运行带来了一定的影响。
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