xylem

xylem

英 ['zaɪləm]
　　美 ['zaɪləm]

n. [植] 木質部

中文詞源：

xylem 木質

來自希臘語xylon,木頭。

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.

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.

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.

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.

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.