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| 等摩擦法 | |||
| 等摩阻法; 送风管道的均等摩阻计算法; 送风管道的恒压计算法; 均等摩阻计算法; 送风管道的均等摩阻计算法 | |||
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| 送风管道的均等摩阻计算法法; 送风管道的均等摩阻计算法 | |||
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equal friction method : 1 phrase in 1 subject |
| Refrigeration | 1 |
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