1.  hypocotyl
2.  plumular axis

• 1. 胚轴: embryonal axis | embryonic axis | embryo axis
• 2. 上胚轴: epicotyl
• 3. 下胚轴: hypocotyl | hypocotyledonary axis

更多释义

• 1.子叶和种子叶附着在胚轴上。
  The cotyledons and the seed leaves are attached to the embryonic axis.
  dict.yoduao.com
• 2.子叶和未来称为下胚轴的主轴延长。
  Cytyledons and future stalk called the hypocotyl elongate.
  dict.yoduao.com
• 3.上胚轴苗区具有内始式真中柱。
  There was endarch eustele in epicotylary shoot zone.
  dict.yoduao.com

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