infinite medium

基本解释

A transient state distribution of temperature within the infinite medium is assumed to induce the moisture transfer process.
假定无限介质内热源的存在引起周围多孔介质内温度的瞬态变化和水分的迁移和扩散。
According to this method, a half infinite medium located in cylindrical coordinate system is made discrete by adopting unequal interval mesh.
此法采用不等间隔的网格，将置于柱坐标系中的半无限介质进行离散化。
Based on the nonlinear geometry field theory of continuum mechanics, this paper analyzes the stress field due to a screw dislocation in an infinite medium.
本文以非线性连续体几何场论为理论基础，分析了无限大体中一个螺位错引起的应力场。

He chose this because the supernova that created it blew a giant bubble, known as the Vela nebula, out of the surrounding interstellar medium, and that bubble is big enough to stand in for the infinite sheet of gas.
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