在前人研究基础上，用有限差分方法建立了一个非稳态二维地温场的数学模型。
An unsteady two-dimensional soil temperature field model is established using the limited difference method in this paper.
以某钢厂宽板坯连铸结晶器为研究对象，利用商业软件PHOENI CS建立一个三维有限差分模型，模拟宽板坯连铸结晶器内钢液的流动分布。
The fluid flow in a wide slab continuous caster mold was simulated by a three-dimensional model set up using the commercial software PHOENICS.
以某钢厂宽板坯连铸结晶器为研究对象，利用商业软件PHOENI CS建立一个三维有限差分模型，模拟宽板坯连铸结晶器内钢液的流动分布。
The fluid flow in a wide slab continuous caster mold was simulated by a three-dimensional model set up using the commercial software PHOENICS.
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