It is noted that a periodic simply connected region, if not the entire plane,may be standardized either to a half-plane or to a straight strip under the condifion of reservation of the periodicity by a univalent conformal mapping.
本文指出，经单叶并形映照，周期单连通区域可在保持周期性的条件下，标准化为全平面、半平面或直线边带形域。
We show the existence and regularity of weak solutions to the incompressible steady Navier-Stokes equations in a two dimensional channel-like non-simply connected domain with slip boundary conditions and given velocity at infinity.
证明了二维非单连通管型区域上带slip边界条件,在无穷远处有给定速度的不可压Navier-Stokes方程稳定解的存在性和正则性。
Firstly the connected units of reservoir are compartmentalized depending on the distribution of the interlayers made of mudstone or muddy siltstone,and then the flow units of reservoir are divided using clustering analysis on the characteristic parameters of reservoir that influence the flow of fluid.
在储层流动单元划分时,首先根据稳定的泥岩和含泥粉砂岩隔夹层的分布划分连通单元,然后对影响流体流动的储层特征参数进行聚类分析,并划分流动单元。