In survey of this phenomenon, using spot date, physical and mathematics stimulant method, flowage and diffusion are studied and wellbore flow and air diffusion model of CO are established.
针对这一现象，运用现场数据以及物理模拟和数学模拟方法首次通过对CO气体流动、扩散等的综合研究，建立了CO井筒流动及大气扩散模型。
In this article, the mathematics model of multi stage carburizing is obtained and its physical meaning is discussed.
本文建立了多段法渗碳的数学模型，并讨论其物理意义。
In this article, the mathematics model of multi stage carburizing is obtained and its physical meaning is discussed.
本文建立了多段法渗碳的数学模型，并讨论其物理意义。
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