a. 脉管的,有脉管的,血管的
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- The hormone estrogen has been proven to protect women from cardio vascular disease and osteoporosis
已经证实,雌激素可以保护妇女避免心血管疾病和骨质疏松。收藏 - vascular cylinder=stele)
【植】维管柱收藏 - A thin scalelike or platelike structure,as one of the thin layers of sensitive vascular tissue in the hoof of a horse.
蹄叶一种细小的鳞状或片状结构,如马蹄子上敏感的管状组织的细小薄片收藏 - A cell in the xylem of vascular plants.
管胞在维管植物的木质部中的细胞收藏 - There are about 700 interspecific hybrids among the British vascular plant flora of about 2500 native and alien sexual species
在不列颠维管植物区系的2500个本地的和归化的有性种中,约有700个种间杂种。收藏
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