本文以5m间距的布管方式为例,使用FLUENT软件对等间距及非等间距两种布管方式进行数值模拟,研究比较存在地下水渗流时非等间距布管......

普通物理教学中涉及有趣的牛顿环，结合教学过程中产生的各种奇思妙想，对牛顿环的形成进行深入剖析，并讨论各种变化；利于学生真正掌握有......

In this paper we consider the problem of finding bounds on the size of lexicographic constant-weight equidistant codes o......

This paper deals with the numerical method for the system of reaction-diffusionequations with a small parameter.It is di......