xylem
英['za?l?m]
美['za?l?m]
- n. [植] 木質部
中文詞源
xylem 木質
來自希臘語xylon,木頭。
英文詞源
- xylem (n.)
- "woody tissue in higher plants," 1875, from German Xylem, coined from Greek xylon "wood" (see xylo-).
雙語例句
- 1. Sapwood contains xylem vessels, but not as strong as heartwood.
- 邊材含有木質導管, 但不如中心木質那樣堅硬.
來自辭典例句
- 2. The xylem of ferns and conifers contains only tracheids.
- 蕨類植物和針葉樹的木質部僅含有管胞.
來自辭典例句
- 3. Secondary xylem consists of pitted vessels, parenchyma fibers and rays.
- 次生木質部由孔紋導管 、 薄壁組織及射線所組成.
來自辭典例句
- 4. A system confined to the transport of mineral elements is known as the xylem.
- 專門用來運輸礦物元素的系統稱為木質部.
來自辭典例句
- 5. The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.
- 中柱包括從原形成層衍生而來的全部初生組織,由中柱鞘 、 韌質部和木質部組成.
來自辭典例句