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The primary structure and early secondary structure were normal.
根的初生结构和早期的次生结构都是正常的。
youdao
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Describe the difference of primary structure between root and stem.
简述根与茎初生结构的区别？
youdao
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Describe the difference of primary structure between root and stem.
简述根与茎初生结构的区别？
youdao