有效空泡数 effective cavitation number
空泡系数 void coefficient
反应性空泡系数 reactivity void coefficient ; void reactivity coefficient
负空泡系数 negative void coefficient
通道内空泡分数 in-channel void fraction
缓和剂空泡系数 moderator void coefficient
钠空泡系数 sodium-void coefficieht
反应性负空泡系数 negative void reactivity coefficient
正空泡系数 positive void coefficient
测量结果表明：在空化形态不变的条件下，空化噪声宽带谱级将随空泡数的减小而单调增加；
The results of experimental investigations clearly show that the broad band spectra level of cavitation noise increases as the cavitation number becomes small;
减压情况下，通过既改变空泡数又改变浸深比的多方案螺旋桨水动力性能试验来建立和完善半浸桨空化性能试验技术。
In depressurized condition, multi-scheme experiments of propeller hydrodynamics performance have also been accomplished under different number of cavity and ratio of submergence.
对于空泡问题的无量纲数也展开进行了研究，结果表明不同参数变化引起的不同空泡数对流场中空泡的结构有一定的影响。
Cavitation number is affected by several variables, each of them affects the flow field differently, and it is necessary to study the influence by each of them.
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