用作名詞 (n.)
In vascular plants, the xylem and phloem serve to translocate such substances. 維管植物的木質部和韌皮部主要進行對這類物質進行運輸。
The secondary phloem consisted of sieve cells and phloem parenchymas. 根的次生韌皮部則由篩胞和韌皮薄壁細胞組成。
1.In vascular plants, the xylem and phloem serve to translocate such substances. 維管植物的木質部和韌皮部主要進行對這類物質進行運輸。
2.The secondary phloem consisted of sieve cells and phloem parenchymas. 根的次生韌皮部則由篩胞和韌皮薄壁細胞組成。