以下为句子列表：
英文: A single reducing valve can be applied if operating flow, requirements are within the capacity of one size valve, and pressure drop is outside the Cavitation Zone.
中文: 如果一个阀门通径可以满足工作流量和要求，并且压降处于空穴区外，则可以安装单个减压阀。
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英文: At same time, author suggests to change cavitation factor to important operation condition during pressure fluctuation test so to avoid producing the phenomenon of cavitation stimulus in the prototype operation.
中文: 同时，建议针对水轮机的重要运行工况，增加不同空化系数下的压力脉动试验，以避免在真机运行时可能产生“空化自激”现象，确保原型机组的安全运行。
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英文: Avoid continued operation within the cavitation zone.
中文: 避免在空穴区域内持续运行。
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英文: Based on the simulation results, the region and the degree of cavitation occurred in the flow passage of the turbine with a low water level at the outlet of the draft tube are examined, the cavitation performance of the turbine is also evaluated.
中文: 根据模拟结果，考察了水轮机在低尾水位下运行时流道内空化发生的部位和程度，并对水轮机的空化性能进行了预估。
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英文: Based on this model, the effects of geometric and structural parameters, such as injection pressure, rear pressure, length-diameter ratio, inlet round angle-radius ratio and non-axis symmetry of nozzle, on the distribution of the cavitation inside the noz
中文: 基于这一模型进一步分析了喷射压力、背压和喷孔长径比、喷孔入口圆角比、非轴对称喷孔等几何结构参数对喷孔内空穴分布的影响。
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