A 500-metre-long water release gate with 27 openings has been basically completed in central China's Hubei Province. This is part of the Gezhouba water conservancy project. At present, 12-metre-wide...
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A 500-metre-long water release gate with 27 openings has been basically completed in central China's Hubei Province. This is part of the Gezhouba water conservancy project. At present, 12-metre-wide...