以下为句子列表：
英文: Abstract: Apply computer simulation to the distribution pattern of air-flow without considering the cold condition of the combustion and compare the flow patterns under different designed circumstances.And the effect of the design of the partition in the
中文: 文摘:应用计算机模拟的方法，在不考虑燃烧的冷态情况下，研究了热风炉燃烧室内的气流分布规律.在此基础上，比较了2种不同设计方案的气流流动特征，尤其是研究了燃烧器空气通道内阻流板的设置与否对空气和煤气的流动和混合的影响.结果表明，阻流板的设计对加强空气和煤气的混合有着极为重要的作用，同时也增加了空气管道的阻力损失，在同样的工况条件下需要提高管道系统的总压力.
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英文: Results showed that due to the sharp difference between diameters at the upper and lower parts of the canal, the high-speed air-flow at the lower-end opening can drain the fluid below the opening out while the lower-speed air-flow al the upper opening is
中文: 结果发现：由于根管两端管迳相差悬殊，根尖孔産生的高速气流冲击，吸引根尖液，可引流低于根尖孔的液体；另一方面，开髓孔低速气流不易将口腔内唾液、渗出物重新带入根尖腔。
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英文: The two modifications are: additional air-flow is put on the wider beam; one dome is put on or beneath the platform individually.
中文: 主要措施：在宽梁上增加额外送风；在平台上下方各加一导流罩装置。
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英文: Vortexs are observed after the beams, which greatly influence the inlet air-flow of fan, reduces the air-flux, causes noise and wastes energy.
中文: 支承结构造成的流体绕流现象在风机进口处形成涡流，造成风机风量减少，噪声增加，浪费能源。
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