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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。
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basic public services
basic quantitative features of coastal processes
basic radiating element
basic rate interface
basic rate interface, BRI
basic rate interference
basic raw material of iron and steel metallurgy
basic raw materials for nonferrous metals metallurgy
basic raw materials for organic industry
basic refractories
basic relation
basic reliability
basic remuneration
basic renewal theorem
basic representation
basic reproduction number
Basic Requirements on Exhibition Logistics Service
basic research
basic reserve
basic ring
basic rock
basic rural operation system
basic salt
basic schedule
basic science of water conservancy in ancient China
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