To solve LAPLACE equation, 8-nod cubic unit and appropriate function were applied to discrete the structure surface and its environment. 使用8节点立方体和合适的形状函数对构筑物表层和周围场域进行了离散。
By introducing the lattice theory and considering a cubic unit cell, the water permeability of concrete is obtained for several lattice arrangements of aggregates, which indicates that the arrangement of aggregates is an important factor that affects the water permeability of concrete. 引入晶格理论,取立方体单元胞,求解混凝土骨料几种不同规则排列下的混凝土相对水渗透系数,计算结果表明骨料排列是影响混凝土水渗透系数的重要因素。
The reservoir has in storage about five million cubic metres. a metric unit of length equal to one millionth of a meter. 这水库有五百万立方米的储存量。公制长度单位等于百万分之一米。
Based on the open-cell nano-porous structure features, a cubic array of intersecting spheres unit cell model describing the coupled conduction of gas and solid in aerogel super insulator was developed. By one-dimensional heat conduction analysis in the unit cell, the effective thermal conductivity expression was obtained. 根据气凝胶的纳米孔结构特点,采用由小球体构成的立方阵列单元体结构,建立了描述纳米孔超级绝热材料气凝胶的气固耦合导热模型。
In this paper, normalized cubic Gauss sums ' distribution at unit circle is studied by analytical methods. 本文运用解析的方法,研究模为算术级数中素数的正规化三次高斯和在单位圆周上的分布。