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航道导标
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航道导标
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水运交通指示
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航道导标
由前后两座标志所构成的导线标示航道的方向的水上助航标志。指示船舶沿该导线标示的航道航行。
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principal sphere of curvature
principal square root
principals' research leadership
principal state model
principal state of polarization
principal's teaching leadership
principal strain
principal subgroup
principal subgroup series
principal submatrix
principal submodule
principal subspace
principal surface
principal symbol
principal symbol sequence
principal system
principal tangent
principal tangent bundle
principal telescope
principal term
principal theorem
principal trace
principal translation
principal two-sided ideal
principal type
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更新时间:2025/3/15 4:40:46