xylem
英['za?l?m]
美['za?l?m]
- n. [植] 木質(zhì)部
中文詞源
xylem 木質(zhì)
來(lái)自希臘語(yǔ)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(yǔ)例句
- 1. Sapwood contains xylem vessels, but not as strong as heartwood.
- 邊材含有木質(zhì)導(dǎo)管, 但不如中心木質(zhì)那樣堅(jiān)硬.
來(lái)自辭典例句
- 2. The xylem of ferns and conifers contains only tracheids.
- 蕨類植物和針葉樹(shù)的木質(zhì)部?jī)H含有管胞.
來(lái)自辭典例句
- 3. Secondary xylem consists of pitted vessels, parenchyma fibers and rays.
- 次生木質(zhì)部由孔紋導(dǎo)管 、 薄壁組織及射線所組成.
來(lái)自辭典例句
- 4. A system confined to the transport of mineral elements is known as the xylem.
- 專門(mén)用來(lái)運(yùn)輸?shù)V物元素的系統(tǒng)稱為木質(zhì)部.
來(lái)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(lái)的全部初生組織,由中柱鞘 、 韌質(zhì)部和木質(zhì)部組成.
來(lái)自辭典例句