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 major causes affecting safe and economic operation of boiler air duct system is analyzed and a solution is put forward in this paper.

分析了影响锅炉风道系统安全经济运行的主要原因，并提出了解决方案。

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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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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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