leaf vein

• 叶脉

leaf vein的用法和样例：

例句

1. Venation is the distribution of veins in a leaf.
   脉序是叶片中各叶脉的排列分布状态。
2. The secretory canals in the stem pith and above the leaf xylem were developed from ground meristem.
   茎髓中和叶脉木质部上方的分泌道来源于基本分生组织。