利用邻域粗糙集的属性约简： 从数值数据计算约简，属性数据和它们的混合物与邻域粗糙集。 两种邻域的使用：清晰和模糊。-Use of neighborhood rough set attribute reduction: reduction from numerical data, attribute data and their mixtures with neighborhood rough set. The use of two kinds of neighborhoods: clea

主要是提供各种单质、化合物、混合物的物理内禀属性-Mainly to provide a variety of single substances, compounds, the intrinsic physical properties of the mixture

水蒸气与空气按质量分数混合后的物性参数质量加权平均——fluent udf 源文件(The mass average of the physical parameters of the mixture of water vapor and air by mass fraction)