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与IEC60193(1965)及其补充规定相比 ,本文论述、推导了IEC60193(1999)最终草案中增加或修改的几个内容的意义 ,它们是空化系数参考面的定义 ;试验水温对模型效率的影响 ;模型试验结果到真机效率的换算等。
Compared with IEC60193 (1965) and its supplementary provisions, this paper discusses and deduces the meaning of several contents added or modified in the final draft of IEC60193 (1999). They are the definition of reference surface of cavitation coefficient; the influence of test water temperature on model efficiency Impact; model test results to the real machine efficiency conversion.