Secondary structures

• 次生结构

Secondary structures的用法和样例：

例句

1. The primary and early secondary structures are similar to those of most herbs of the dicotyledons.
   其初生结构和早期的次生结构类似于一般的草本双子叶植物根。
2. In the secondary phloem of Tree Peony metaphloem was dominative in the root's secondary structure, which was just opposite to Herbaceous Peony.
   根次生结构，牡丹根次生韧皮部占主要部分，而芍药根次生木质部占主要部分。