并论证利用自然风稀释污水隧道内有害气体浓度的理论可行性。

The thesis demonstrates the feasibility of natural ventilation to control concentration of noxious gas in the sewer tunnel.

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而且污水将会被稀释。

And the polluted water will be diluted.

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试验结果表明：污水射流扩散和近区内的稀释度主要决定于射流佛劳德数、相对水深和相对流速。

The results indicated that the diffusion and dilution of wastewater jet mainly depended on jet Froude Number, relative depth, and relative velocity.

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