lewis number meaning in English

路易士数:液体的扩散系数
路易斯数

And then , numerical simulation of double diffusive in a square cavity with opposing temperature and concentration gradients is executed . effects of rayleigh number , lewis number and buoyant ratio on flow structure and distribution temperature and concentration are analyzed at large
并以常温下的水为研究介质的，应用quick格式分析了层流下方腔内双扩散流动特征，探讨了ra 、 le 、浮力比对双扩散流动的影响。