单词
xylem
英 ['za?l?m]
美['za?l?m]
基本信息
- n. [植] 木质部
畅通词汇
中文词源
xylem 木质
来自希腊语xylon,木头。
英文词源
- xylem (n.)
- "woody tissue in higher plants," 1875, from German Xylem, coined from Greek xylon "wood" (see xylo-).
双语例句
- 1. Sapwood contains xylem vessels, but not as strong as heartwood.
- 边材含有木质导管, 但不如中心木质那样坚硬.
来自辞典例句
- 2. The xylem of ferns and conifers contains only tracheids.
- 蕨类植物和针叶树的木质部仅含有管胞.
来自辞典例句
- 3. Secondary xylem consists of pitted vessels, parenchyma fibers and rays.
- 次生木质部由孔纹导管 、 薄壁组织及射线所组成.
来自辞典例句
- 4. A system confined to the transport of mineral elements is known as the xylem.
- 专门用来运输矿物元素的系统称为木质部.
来自辞典例句
- 5. The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.
- 中柱包括从原形成层衍生而来的全部初生组织,由中柱鞘 、 韧质部和木质部组成.
来自辞典例句
xylem相关单词