xylem

英 [ˈzaɪləm] 美 [ˈzaɪləm]

n.  木质部(植物中将水分和矿物质从根部向上输送的组织)

医学

COCA.43992



牛津词典

noun

  1. 木质部(植物中将水分和矿物质从根部向上输送的组织)
    the material in plants that carries water and minerals upwards from the root

    双语例句

    1. 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。
    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。
    3. Xylem pressure and Na~+ uptake in roots of soybean under saline stresses
      盐胁迫对大豆根系木质部压力和Na~+吸收的影响
    4. Effects of potassium addition and water supply on xylem embolism in Acer truncatum and Ligustrum lucidum
      施水和钾素添加对元宝枫和女贞木质部栓塞的影响
    5. The results showed that the root transactions had significant differences in periderm, phloem, and xylem between cultivated and wild Salvia miltiorrhiza.
      结果表明,在解剖横切面上,栽培与野生丹参根的周皮、韧皮部、木质部具有显著差异。
    6. Relationships between degree of xylem embolism under different water gradients and ecophysiological indexes such as water potential were studied by controlling soil moisture of potted plants.
      用盆栽控水方法,对不同水分梯度下木质部栓塞程度与水势等生理生态指标之间的关系进行了研究。
    7. The recently developed xylem-pressure probe technique is the only means to directly measure negative pressure in xylem conduits.
      此外,木质部压力探针技术是目前唯一可以直接测定导管或管胞中负压的工具。
    8. The correlation between the reducing sugar content in phloem and xylem and the ratio of damaged trees was not close.
      不同杨树品系韧皮部和木质部的还原糖含量与被害株率没有相关性。
    9. The vascular cambium is located between the xylem and the phloem.
      维管形成层位于木韧之间。
    10. Both xylem and phloem form a continuous branched system in the whole plant body.
      木质部和韧皮部在植物体内构成一个连续的分支系统。
    11. After vascular cambium cells divide, the progeny cells on the interior side become xylem parental cell.
      维管形成层细胞分裂后,在内侧分裂出来的细胞成为木质部的母细胞。
    12. Axial and radial systems formed the secondary xylem of the roots.
      轴向系统由管胞和木薄壁组织细胞组成;
    13. Effects of water and nitrogen forms on growth and xylem sap of rice seedlings
      不同水、氮条件对水稻苗生长及伤流液的影响
    14. Hilton plant beds ( botany) consisting of or containing lignin or xylem.
      【地质】希尔顿含植物层(植物学)由木质构成或包含木质的。
    15. Several Supplementary on the Embolism Forming and Repairing in Xylem of Woody Plants
      木本植物木质部栓塞的形成和修复的几点补充
    16. 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。
    17. The secondary xylem of trees and shrubs, lying beneath the bark and consisting largely of cellulose and lignin.
      木质位于树皮下的树和灌木的次木质部,主要由纤维质和木质构成。
    18. The correlation between the reducing sugar content in phloem and xylem and the ratio of damaged trees was not close. The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.
      不同杨树品系韧皮部和木质部的还原糖含量与被害株率没有相关性。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。
    19. The vessel elements of secondary xylem in Litchi chinensis are observed and studied by bio-microscope image analysis system and micrography.
      摘要运用细胞图像分析系统及显微照相的方法,对荔枝次生木质部导管分子进行了观察研究。
    20. The absorbable root length density, density of xylem parenchyma cells and vessel numbers in root and stem can be used as measuring index of resistance to verticillium wilt in cotton.
      棉花根系的吸收根根长密度,根和茎的薄层细胞密度,导管数可以作为对黄萎病抗性的检测指标。
    21. Intrafascicular cambium ( fascicular cambium) The part of the VASCULAR CAMBIUM within the vascular between the xylem and phloem.
      束中形成层:是位于木质部和韧皮部构成的维管束内的一部分维管形成层。
    22. Lignified tissues include SCLERENCHYMA and XYLEM.
      木质素组织包括厚壁组织和木质部。
    23. The bine is comprised by cerebral cortex, xylem and fungous marrow.
      茎由皮层。木质部和海绵状的髓组成。
    24. Any of various plants, such as the ferns and seed-bearing plants, in which the phloem transports sugar and the xylem transports water and salts.
      各种植物,如厥类植物和含种子的植物,在此植物中韧皮部输送糖分而木质输送水分和盐分。
    25. Protoxylem The PRIMARY XYLEM elements that are formed from the procambium first.
      原生木质部:初生木质部的成分,最早由原形成层形成。
    26. SKC1 is preferentially expressed in the parenchyma cells surrounding the xylem vessels.
      SKC1在木质部导管周围的薄壁细胞特异表达。
    27. Discussion on the Daily Change of Hydraulic Architecture Characteristics and Xylem Embolism of Some Trees Species in North China
      我国北方树种水力结构特征与木质部栓塞日变化规律研究
    28. Haplostele A type of protostele having a solid strand of stele with the xylem on the inside encircled by phloem, pericycle, and endodermis.
      单中柱:原生中柱的一种类型,是由韧皮部、中柱鞘和内皮层包围着内方的木质部构成的实心中柱。
    29. Large proportion of xylem benefit to the water transfer.
      叶脉中木质部比重越大,越有利于水分的传输。

    英英释义

    noun

    1. the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels