actinostele

常见例句

• Actinostele A rype of protostele in which the xylem is star shaped and the phloem lies between the points of the star.
  星状中柱：原生中柱的一种类型。木质部是星形的，韧皮部位于星形之间。
• the actinostele of root of the former was di-to octoarch, but the latter only di-to pentarch;
  石菖蒲根的内皮层细胞壁为马蹄形五面加厚；
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