Supply air duct system for local clean zones.

局部洁净区的送风管道系统。

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The substructure boundary element-transfer matrix method is presented for duct system of greater length or mufflers with complex geometry.

对于较长或具有复杂形状的管道及消声器，提出了子结构边界元——传递关系矩阵法。

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According to the analysis on pressure of three kinds of duct systems, concludes that the total pressure of a fan should be equal to the resistance loss of the duct system.

通过对三种风道系统的压力进行分析，认为应根据风机全压等于风管系统阻力损失来选择风机。

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Opponents of the method, however, are saying that the conversion process uses great amounts of fossil fuels and that it harms marine life through its vast duct system whereby it pipes water into the desalination facilities.

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