void fraction
空白分数：在分数中
常用释义
英式发音
美式发音
基本释义
- 空白分数：在分数中，分子和分母都是0的分数，通常被认为是没有意义的。
例句
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1·The void fraction of annular two-phase flow inside cylinder is analyzed.对圆管内环状两相流的空泡份额进行了分析。
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2·The method for predicting void fraction and pressure drop is then developed.然后再分析预测孔隙率和压降的模型。
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3·In annular flow the penetrating effect of stream A makes the void fraction same besides a baffle.在环状流下，A流路的贯通作用使折流板前后对应区域的含气率基本一致；
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4·The change regularities on void fraction and density of powder material were revealed mathematically.同时，运用数学的方法揭示了粉体的空隙率和粉体密度的变化规律。
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5·The result indicates that the sound speed is related to the void fraction, local pressure and flow pattern.试验结果表明，气液两相流音速与气泡率、当地压力及其流型有关。
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6·The calculated results of void fraction and transition segment length agree well with the experimental data.含气率以及过渡段长度分布的计算值与试验值符合较好。
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7·The definition of the void fraction and the calculation formula for the void fraction determining were given.给出了孔隙率的定义和确定孔隙率的方法。
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8·The results show that the effect of a void fraction distribution on this construction of capacitor is not evident.结果表明，电容法的主要影响因素——空泡分布对这种结构的电容器影响不大。
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9·Dynamic thermomechanic analysis (DMA) shows that effect of CaCO3 for reinforcing RPUF have relation to void fraction.在动态热机械分析实验中，交联密度对颗粒填料的增强效果有明显影响。
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10·Higher foaming pressure will lead to smaller cell size. However, too high foaming pressure may lower the void fraction.增大发泡压力有利于减小泡孔孔径，但压力过高会降低发泡硅橡胶的孔隙率。