Its internal cause and the outflow boundary are by intriguing factors and so on technology, market and policy constitute.

它的内因与外缘是由错综复杂的技术、市场与政策等因素所构成。

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The Characteristic inflow boundary Conditions are used at the inflow boundary. We also set the pressure correction term at the outflow boundary.

入口边界采用特征入流边界条件，并在出口边界作压力修正。

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The boundary conditions concerning inflow sect ion, outflow section, solid wall surface as well as obstacles within computation al region was dealed adopts appropriate approaches.

采用了适当的处理方法对其计算模型进行了简化，以及对其来流面、出流面、固体壁面及计算区域内障碍物的边界条件进行确定。

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