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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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retinyl palmitate
retinyl palmitate; vitamin A palmitate
Retire
retired servicemen medical insurance
retired servicemen old-age insurance
retirement
retirement age
retirement syndrome
retirement system
Retirement System for the Employees of Public Institutions
Retiro Park
retort
retouching
retrace
retract
retractable enclosure
retractable undercarriage test
retracted confession
retractibility
retractible
retractible neighborhood
retracting deformation
retracting transformation
retraction
retraction mapping
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