primary xylem
英
美
- 初生木质部
双语例句
- In nonwoody plants the primary xylem is the only water-conducting tissue, but in mature plants with secondary growth this function is mostly taken over by the secondary xylem.
在尚未木质化的植物中,初生木质部是唯一的输水组织,但在具有次生生长的成熟植物中,该功能大多由次生木质部行使。
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