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嘉陵江梯级渠化航道
释义
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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periodic fraction
periodic free resolution
periodic function
periodic geodesic
periodic group
periodic heat flow method
periodic inequality
periodic infinite decimal fraction
periodic inspection
periodic instability
periodic in the mean
periodicity
periodicity and symmetry of surface structure
periodicity characteristic
periodicity factor
periodicity interval
periodicity modulus
periodicity of a function
periodicity of a sequence
periodicity relation
periodicity theorem
periodic law
periodic law of elements
periodic law of geographic zonation
periodic maintenance
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