| 单词 | 维管 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔bark〕The tough outer covering of the woody stems and roots of trees, shrubs, and other woody plants. It includes all tissues outside the vascular cambium.树皮，茎皮：包在树、灌木和其它木本植物的根部、茎部的硬皮，包括维管形成层外的所有组织美国传统〔bryophyte〕A plant of the Bryophyta, a division of photosynthetic, chiefly terrestrial, nonvascular plants, including the mosses, liverworts, and hornworts.苔藓植物：苔藓植物门的植物，需要光合作用的多为陆生的非维管束植物的一支，包括苔藓、地钱和金鱼藻美国传统〔bundle sheath〕A layer or region of cells surrounding a vascular bundle.维管束鞘：围绕维管束的一层或一部分细胞美国传统〔bundle〕Botany A vascular bundle.【植物学】 维管束美国传统〔control〕David managed a small bookstore.戴维管理一家小书店。朗文当代〔fibrovascular〕Having fibrous tissue and vascular tissue, as in the woody tissue of plants.维管（组织）的：含有纤维组织及脉管组织的，如在植物的木质组织中美国传统〔interfascicular cambium〕The cambium arising between the vascular bundles.束间形成层：维管束之间的形成层美国传统〔lamella〕A thin scale, plate, or layer of bone or tissue, as in the gills of a bivalve mollusk or around the minute vascular canals in bone.薄片，薄板，薄层：一种薄的骨头或组织的鳞片、盘、或壳层，如双壳软体动物组成鳃的薄板或是骨内环绕小的维管的骨层或组织美国传统〔lateral meristem〕A meristem in vascular plants, such as the cambium, in which secondary growth occurs.侧分生组织：可形成再生的维管植物分生组织，如形成层美国传统〔leaf gap〕A break in the vascular tissue of a stem above the point of attachment of a leaf trace.叶隙：茎的维管组织中的一条裂缝，位于叶迹连接点的上部美国传统〔leaf trace〕A strand of vascular tissue that extends between the vascular bundle of a stem and a leaf.叶迹：一束维管组织，伸展于茎和叶的维管束之间美国传统〔pith ray〕The parenchymatous tissue that extends between the vascular bundles of a stem or root.髓射成：一种分布在茎部或根部维管束之间的薄壁组织美国传统〔procambium〕A type of undifferentiated plant tissue that gives rise to vascular tissue.原始形成层：植物分层组织的种类，产生维管束组织美国传统〔secondary growth〕Growth in vascular plants from production of secondary tissues by a lateral meristem, usually resulting in wider branches and stems.次生生长：维管植物藉侧旁的分生组织于次生组织中的生长，通常能生出较宽的枝干美国传统〔stele〕Botany The central core of vascular tissue in a plant stem or root.【植物学】 中柱：植物茎或根部中维管组织的中核美国传统〔trachea〕Botany One of the tubular conductive vessels in the xylem of vascular plants.【植物学】 导管：维管植物的木质部中的管状引导管之一美国传统〔tracheid〕A cell in the xylem of vascular plants.管胞：在维管植物的木质部中的细胞美国传统〔tracheophyte〕Any of various vascular plants, including seed plants and ferns, having a conducting system of xylem and phloem.导（维）管植物：任何种类的维管植物，包括种子植物和蕨类植物，具有木质部和韧皮部导管系统美国传统〔transition region〕A zone in a seed plant where the vascular tissue of the root changes into the vascular tissue of the stem.过渡地区：种子植物中的一个部位，其根部的维管束组织变成了茎部的维管束组织美国传统〔vascular cambium〕A lateral meristem that produces secondary xylem to the inside and secondary phloem to the outside.维管形成层：一种横向的分生组织，向里面产生补充的木质部并向外产生补充的韧皮部美国传统〔vascular plant〕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.维管植物：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美国传统〔vascular tissue〕The supportive and conductive tissue in plants, consisting of xylem and phloem.维管组织：植物中的支持和输导组织，由木质部和韧皮部构成美国传统〔villus〕One of the numerous vascular projections of the small intestine.小肠绒毛：小肠内大量的维管突起美国传统〔xylem〕The supporting and water-conducting tissue of vascular plants, consisting primarily of tracheids and vessels; woody tissue.木质部：在维管束植物中的起支撑作用和输水作用的组织，主要由管胞和管道组成；木质组织美国传统 |
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