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节制闸标
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control gate mark
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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unsaturated vertex
unsaturated zone
unsaturation
unscanned
unscattered
UNSCEAR
unscented Kalman filter
unsclerotized
UNSD
Unsealed Official Documents
unsealed radioactive material
unsealed radioactive source
unseen companion
unseen component
unseen matter
unselected marker
unseparated
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unsetting body
Unsettling Afternoon
unshaped refractories
unsharp masking
unsharp quantum logic
unshelled eggs
unshielded twisted pair
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