Some detail explanation on the influence of anneal on the properties including transmittance, refractive index, and volume fraction porosity of the SiO2 thin films were also given.
研究了退火时透过率、折射率以及气孔率的影响，并做出比较详细的理论解释。
According to the simulated temperature fields and solid fraction, the hot spot and shrinkage porosity are not found in the bolster casting, so the new casting process is feasible.
温度场和固相分数的模拟结果表明，铸件没有产生热节和缩孔缺陷，表明了新工艺的可行性。
With the increasing of mass fraction of PEG, membrane porosity and pure water flux become larger, and the maximum tensile strength and elongation at break of the membrane criterion decrease gradually.
随着PEG质量分数的增加，膜孔隙率与水通量变大，最大拉伸强度、断裂伸长率等力学性能逐渐减小。
Under the same deposition condition, the porosity of composites with 40% fiber volume fraction is a little bigger than that with 30% fiber volume fraction.
同样沉积条件下，纤维体积含量40%的复合材料与含量为30%的复合材料相比，气孔率略大。
Under the same deposition condition, the porosity of composites with 40% fiber volume fraction is a little bigger than that with 30% fiber volume fraction.
同样沉积条件下，纤维体积含量40%的复合材料与含量为30%的复合材料相比，气孔率略大。
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