triarch

常见例句

• The adventitious root is triarch,and has the secondary structure.
  不定根爲三原型，具次生結搆。
• Root which was diach, triarch and tetrarch was comprised of epidermis, cortex and stele.
  根爲二、三和四原型，由表皮、皮層和中柱3部分組成；
• 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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