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双韧管状中柱
释义
双韧管状中柱
Encyclopedia
理学
〔植物形态与结构〕
释
amphiphloic siphonostele
双韧管状中柱
环状木质部的内、外两边均有韧皮部的中柱。中央具髓的管状中柱的一种。如蚌壳蕨属(Dicksonia)植物根状茎中的中柱。
随便看
boundary theory
boundary tone
boundary treaty
boundary type
boundary uniqueness
boundary value
boundary value analysis
boundary value condition
boundary value control
boundary value problem
boundary-value problem
boundary value problem of analytic function
boundary value problem of electromagnetic field
boundary-value problem of electromagnetic field
boundary value problem of the first kind
boundary value problem of the second kind
boundary value problem of the third kind
boundary-value problems of electromagnetic field
boundary value representation
boundary variation
boundary vorticity flux
boundary wave
bound-bound absorption
bound bound laser
bound-bound laser
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