常见例句用作名詞 (n.)In vascular plants, the xylem and phloem serve to translocate such substances.維琯植物的木質部和靭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.根的次生靭皮部則由篩胞和靭皮薄壁細胞組成。 返回 phloem