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节制闸标
设在靠近节制闸上游或上、下游一侧的岸上,也可将灯悬挂于节制闸的上游或上、下游水面上空架空线上,标示前方是节制闸防止船舶误入发生危险的航行标识。
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ordinary helicoid
ordinary helix
ordinary indirect proof
ordinary individual and historical personage
ordinary inflection point
ordinary integral element
ordinary integral manifold
ordinary jump
ordinary Kriging
ordinary language
ordinary least squares
ordinary letter
ordinary light
ordinary lighting
ordinary line
ordinary lower derivative
ordinary magnetoresistance
ordinary multiple point
ordinary node
ordinary object surface disinfection
ordinary operator
ordinary pencil of planes
ordinary pencil of straight lines
ordinary periodic solution
ordinary point
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