diarch

常见例句

• The primary meristem consisted of calyptrogen, primordial epidermis, periblem and plerome, while the primary structure consisted of epidermid, cortex and central cylinder.Primary xylem is diarch.
  原分生組織來源於胚根，由3群原始細胞組成，具有典型分生組織的細胞學特征；
• The results showed that the primary xylem of the root is diarch, triarch and tetrarchy;
  結果表明：根的初生木質部爲二原型、三原型和四原型；
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