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嘉陵江梯级渠化航道
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嘉陵江梯级渠化航道
Encyclopedia
工学
河道渠化
释
Canalized Channel of Jialing River
嘉陵江梯级渠化航道
嘉陵江四川广元至重庆朝天门段经梯级渠化整治后形成的高等级航道。渠化后,航道等级从等外至Ⅳ级提高到Ⅳ至Ⅲ级标准,航道里程从739千米缩短至682.8千米。
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Japan Industrial Designers' Association
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Japan Institute of Design Promotion
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Japan Library Association,JLA
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Japan Science and Technology Agency
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Japan Society for the Study of the Book of Songs
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